Calculus (Answer Check)

88,878 results, page 58
  1. Psychology -- Check please?

    According to Solomon Asch's study of conformity, which of these situations would not increase conformity? feeling insecure feeling you have reached your potential feeling impressed by a group's status feeling that others are watching you feeling that
  2. math

    What is the line of thought or sequence of thought for solving simple algebraic expressions? When I'm asked to solve the expression (5k)k^3....first I check with my list of exponent rules, and there are always a few that could be used to solve the
  3. Child Care

    Increasing numbers of communities are addressing the need for out-of-school care due to the relationship between A. teen pregnancy and inadequate care of infants. B. inadequate supervision of teens and teen pregnancy. C. working mothers and juvenile
  4. chemistry

    Calculate the reduction potential of the following solutions: a- 1 M CuSO4 b- 1 M FeSO4 c- 0.1 M CuSO4 I'm now the same answer as you. :( This is how I did it can you please check. a- Cu(s)---> Cu(aq) + 2e = -0.34 V SO4^-2(aq) + 4H(aq) + 2e -->
  5. Calculus (please help!!!!)

    Consider the parameterization of the unit circle given by x=cos(4t^2−t), y=sin(4t^2−t) for t in (−InF, INF). Describe in words and sketch how the circle is traced out, and use this to answer the following questions. (a) When is the
  6. chemistry URGENT

    I need someone to check my answers to make sure that I have the correct answers. (3 Part Question) Two students each measure the density of a quartz sample three times: Student A Student B 3.20 g/mL 2.82 g/mL 2.58 g/mL 2.48 g/mL 2.10 g/mL 2.59 g/mL mean
  7. physics (please help)

    Two identical but separate strings, with the same tension, carry sinusoidal waves with the same frequency. Wave A has an amplitude that is twice that of wave B and transmits energy at a rate that is _____ that of wave B. a)half b)twice c) one-fourth d)four
  8. calculus

    v(t)= Ce^(k(square root(t)) Suppose that the dealer, who is 25 years old, decides to sell the card at time , sometime in the next 40 years: 0< or equal to t < or equal to 40. At that time , he’ll invest the money he gets for the sale of the card in
  9. calculus

    Optimization At 1:00 PM ship A is 30 miles due south of ship B and is sailing north at a rate of 15mph. If ship B is sailing due west at a rate of 10mph, at what time will the distance between the two ships be minimal? will the come within 18 miles of each
  10. calculus

    Constant annual percentage growth The function gives the value of a home in dollars in the year 2000 + t. Find the constant annual percentage change in the value of the home. Give appropriate units with your answer. Again, I'm not sure what function is
  11. Pre-calculus

    For the ellipse with equation 5x^2+64y^2+30x+128y-211=0, find the cooridinates of the center, foci, and vertices. Then, graph the equation. my answer is: coordinates of center: (-3,1) foci:(-11,-1) and (4.7,-1) vertices: (-11,-1) (5,-1) (-3,-1+-square root
  12. Calculus (demand)

    18) The demand equation is x + 1/6p - 10+0. Compute the elasticity of demand and determine whether the demand is elastic, unitary, or inelastic at p=50. a) 5; elastic b) 1/9; inelastic c) 7/6; elastic d) 6; elastic I choose answer A. Is that correct?
  13. Pre-calculus

    State the period, phase shift, and vertical shift of the function y=tan(theta/2-pi/4)+3. Is this right? ANSWER: period:2pi phase shift:-pi/4 vertical shift:3
  14. Calculus - Taylor

    could you please help me with solving this problem? #1) Find the Taylor polynomial Tn(x) for the function 'f' at the number 'a'. f(x) = sqrt(3+x^2) ; a=1; n=2; my work so far: f (x) = sqrt(3+x^2) = (3+x^2)^(1/2) f ' (x) = (1/2)(3+x^2)^(-1/2) f '' (x) =
  15. Calculus

    f(x) = sin^2(x/2) defined on the interval [ -5.683185, 1.270796]. Remember that you can enter pi for \pi as part of your answer. a.) f(x) is concave down on the interval . b.) A global minimum for this function occurs at . c.) A local maximum for this
  16. Calculus

    yes! tnk u ok? It's actually (x->0.) Find the limit of cot(x)-csc(x) as x approached 0? Lim [cot(x) - csc (x)] ..x->0 = Lim [(cos x -1)/sin x] ..x->0 Use L'Hopital's rule and take the ratio of the derivatives: Lim (-sin x/cos x) = 0 x->0 thank
  17. cultural diversity

    1. Which one of the following statements does Not exemplify the concept of teachable moments? A. The teacher follows the child's cues when exploring a topic. B. The adult, acting as the child's social partner in the block center, uses semantic extension
  18. Poem: A Voice by Pat Mora

    Could you please check my answers thanks 1.What happens when the mother goes to the state capitol to give her speech? Answer: When the mother goes to the state capitol to address her speech she wanted to hide her face. Also she faked hoarseness, and she
  19. Economics- please check

    Please check to see if my answers are correct. Complete each sentence by choosing the correct answer from the list of terms below. You will not use all of the terms. *normal good *complements *income effect *demand curve *ineleastic *inferior good *law of
  20. chemistry

    If a chemistry student collected 825 mL of gas at 25 degrees C and 7.90*10^2torr, how many moles did she collect? PV=nRT Put P in atmospheres. torr/760 = atm. V is volume (in LITERS.) solve for n, the number of mols. R is a constant of 0.08206 L*atm/mol*K
  21. math

    I have solved the following questions, let me know if they are correct, thanks. 1. Simplify, and write in the base of 3: (9^x . 3^4x)^2 answer: 3^12x 2. Differentiate and simplify a. y= 3x^4 - 4e^x + 8 answer: 4(3x^3 - e^x) b. y= (3 + 4e^x)^5 answer: 20e^x
  22. Craig - baloon - calculus moved up

    Posted by Craig on Tuesday, November 25, 2008 at 7:54pm. t: 0 2 5 7 11 12 r'(t): 5.7 4.0 2.0 1.2 0.6 0.5 The volume of a spherical hot air balloon expands as the air inside the balloon is heated. The radius of the balloon in feet is modeled by a
  23. Math (Calculus)

    Hello, Could somebody please help me with the following question? It asks to differentiate the function below according to derivate rules of calculus such as the power rule (if f(x)=x^n, then f'(x)=nx^n-1), the product rule (if F(x)=f(x)g(x) then
  24. Calculus Help

    The formula C =5/9(F − 32), where F ≥ −459.67, expresses the Celsius temperature C as a function of the Fahrenheit temperature F. Find a formula for the inverse function. What is the domain of the inverse function? (Enter your answer
  25. CALCULUS

    At 3:00 PM a man 144 cm tall casts a shadow 146 cm long. At the same time, a tall building nearby casts a shadow 171 m long. How tall is the building? Give your answer in meters. (You may need the fact that 100 cm = 1 m.)
  26. Spanish

    Usa ORACIONES COMPLETAS para completar estas actividades. (9) 1. ¿Tiene buena pinta? Escriba un párrafo de 4-5 oraciones para describir la foto encima de esta pregunta. Use una variedad de vocabulario y verbos. (5) Answer 2. ¿Te gusta la idea de comer
  27. Chemistry

    Answer the follow using the Energy Profile plot. More than one answer is possible for some questions. What chemical species are present... A. at the longest constraint distance? (Use i, ii, iv, etc. for your answer) B. at the highest energy? (Use i, ii,
  28. are these correct

    Here is the questions it says to simplify: xyy^2 x^3 and here is the answer x^4 y^3 ---------------------------- here is another one m^3 pmxm^2 x^3 p^5 and here is the answer m^6 p^6 x^4 ---------------------------- and here is another one xm^2 xm^3 x^3 m
  29. Language Arts (ASAP)

    3. In "All Together Now," Jordan uses appeals to emotion and appeals to reason to try to persuade her readers that her views are important. In a paragraph, cite one example of each kind of appeal in her work. Then, explain whether you find Jordan's appeals
  30. cultural diversity

    Which one of thefollowing statements does NOT exemplify the concepts of teachable moments? a. the teacher follows the child's cues when exploring a topic. b.The adult acting as the child's social partner in the block center, using semantic extension where
  31. Advanced Functions

    1. Find the following quantities by hand (except for the standard deviation) Check your results with your calculator: a. Minimum b. Lower Quartile c. Median d. Upper Quartile e. Maximum f. Range g. Mean h. Mode i. Standard deviation 2. Is the mean or
  32. U.S History - Pls check my answer :)

    Document A: It is impossible that the allied powers should extend their political system to any portion of either continent without endangering our peace and happiness; nor can anyone believe that our southern brethren, if left to themselves, would adopt
  33. Calculus

    Graph of a piecewised function is f(x)=1, x>0 and f(x)=-1, x<0 What is the lim f(x)=? x-->-3 I did the following: My f(x)=1, x>0 graph started from the point (0,1) and extended right infinitely. My (x)=-1, x<0 graph extended from the point
  34. calculus

    A car leaves an intersection traveling east. Its position t sec later is given by x = t2 + t ft. At the same time, another car leaves the same intersection heading north, traveling y = t2 + 3t ft in t sec. Find the rate at which the distance between the
  35. Calculus

    A particle starts at the point (5,0) at t=0 and moves along the x-axis in such a way that at time t>0 its velocity v(t) is given by v(t)= t/(1+t^2). a). Determine the maximum velocity of the particle. Justify your answer. b). Determine the position of
  36. Calculus

    The machine earns the company revenue at a continuous rate of 62000 t + 38000 dollars per year during the first six months of operation, and at the continuous rate of $69000 per year after the first six months. The cost of the machine is $170000. The
  37. HMO

    Please check my answer thank you You belong to an HMO By paying the HMO premium and being treated through the HMO you're helping to 1 provide more managed care options for enrollees 2. control plan costs for everyone 3. decrease managed care costs 4.
  38. Calculus

    Solve the differential equation. Let C represent an arbitrary constant. (Note: In this case, your answer willto have a negative sign in front of the arbitrary C.) (dz)/(dt) + e^(t+z) = 0 --------------- (dz/dt) + (e^t)(e^z) = 0 (dz/dt) = -(e^t)(e^z) dz =
  39. English - check my answer, please.

    "The study will be conducted with all haste by the Office of Public Mendacity; nevertheless, the Office will fail to blame the culpable." This statement: includes a shift in tense. *** includes a passive construction-one in which the subject receives the
  40. math

    The total amount of interest on a loan of $6,000 for 150 days is 210.50.Using the ordinary interest method,what is the rate of interest on this loan?Round answer to the nearest hundredth. I know the ordinary interest method is 360 days. My anwser is 8.42%
  41. Algebra

    I'm not sure how to solve these problems. Simplify (3xsquare - 2x)divided by 15x - 10 Subtract (2y/x-y) - 5x/4y Solve (27/x) = (8 - 5/x) Simplify (7m^7n^4/8m) divided by (9m^2n^9/5n^2) 1) 3x^2 - 2x/ 15x - 10 factorize both the numerator and denominator
  42. 6th grade math

    Can you check #18 and explain how to do #15 please? 15. Sue ordered 4 pizzas for 6 dollars each and 2 twelve packs of coke for x amount. Use the distributive property to create an equivalent expression. Ans: not sure-seems like they're not related.
  43. Pre Calculus

    As x increases from p/4 to 3p/2, the value of sin(x) : A.increases throughout the interval B.decreases at first, then increases C.increases at first, then decreases D.decreases throughout the interval E.none of the above please explain why the answer is as
  44. BIology

    Reptiles have some specific adaptations that make them well suited to their environment. In your own words, discuss some of these adaptations by answering the following questions. Each answer should be constructed in one or two well-developed paragraphs.
  45. Chemistry-DrBob222

    I got an answer of -1.34 x 10^3 KJ/mol. A 10.00 mL aliquot of 0.100 M NaOH is added to 15.00 mL of 0.100M HCl in a coffee cup calorimeter. The initial temperature of the two dilute liquids were both 25.0 degrees C and the final temperature of the mixture
  46. Us history

    What happened at the demonstrations in albany,georgia and birmingham and talk about the role of young people...i don't rly want an answer talking bout all 3 but like a summary of them thanks Check out these sites for information about the protests in
  47. psychology

    In a study, a few students did the number Stroop and color Stroop. They showed much less interference on the numbers than they did on the color task. Why does this make sense? Please check these sites. If you post your answer, we'll be glad to comment on
  48. Comprehension

    To see the outline of a building as its shadow is cast on the lawn of a park is always amazing to see. When the sun rises perfectly centered at the end of an avenue lined with beautiful buildings, it can make a person stop dead in their tracks to admire
  49. math

    A factory can produce two products, x and y, with a profit approximated by P = I think it's b but I'm not really sure. Can someone show me how to do this or let me check my answer? :) 14x + 22y – 900. The production of y can exceed x by no more than 200
  50. Chemistry(Please just check, thank you)

    1) The approximate pH of a 3.0 X 10^-3 M solution of the strong acid H2SO4 is? I did pH= -log(3.0 X 10^-3) = 2.5 2)If HCLO2 is a stronger acid than HF, which is stronger than HOCL, then the order of strengths of the conjugate bases of these acids is? My
  51. History of health care

    Please check my answer thanks :) You own a company in a state where state funds are not mandated for employee health insurance. What is an option for providing your employees health care coverage for work related injuries I am not to sure about this one I
  52. Child Care

    Increasing numbers of communities are addressing the need for out-of-school care due to the relationship between A. teen pregnancy and inadequate care of infants. B. inadequate supervision of teens and teen pregnancy. C. working mothers and juvenile
  53. calculus

    4. A particle starts at the point (5, 0) at t = 0 and moves along the x-axis in such a way that at time t > 0 the velocity is given by v(t)=t/(1+t^2) a. Determine the maximum velocity attained by the particle. Justify your answer. b. Determine the
  54. Calculus!!!!

    A particle moves along the x-axis with position at time t given by x(t)=e^(-t)sin(t) for 0 is less than or equal to t which is less than or equal to 2 pi. a) Find the time t at which the particle is farthest to the left. Justify your answer I think you
  55. Calculus

    A particle moves along the x-axis with position at time t given by x(t)=e^(-t)sin(t) for 0 is less than or equal to t which is less than or equal to 2 pi. a) Find the time t at which the particle is farthest to the left. Justify your answer I think you
  56. calculus

    Match club charges annual membership dues of 100 pesos per member, less 0.50 cantavo for each member over 600 and plus 0.50 centavo for each member less than 600. How many members should give the club most revenue from annual dues? I'm spamming this
  57. Calculus - Still Need Help! Anyone!

    A particle moves along the x-axis with position at time t given by x(t)=e^(-t)sin(t) for 0 is less than or equal to t which is less than or equal to 2 pi. a) Find the time t at which the particle is farthest to the left. Justify your answer I think you
  58. Calculus

    A particle moves along the x-axis with position at time t given by x(t)=e^(-t)sin(t) for 0 is less than or equal to t which is less than or equal to 2 pi. a) Find the time t at which the particle is farthest to the left. Justify your answer I think you
  59. socialstudies(CHECK ANSWERS)

    modern mexico check answers 7. Which of the following was largely responsible for the Mexican Revolution? A. separation from Spain B. the overthrow of Maximillian(I PICK THIS) C. widespread poverty D. lack of women's rights 9.Why did the Mexican Revolution
  60. English

    Are the following sentences possible? Thank you very much. 1) He shot me in the leg. 2) He showed me the way to the supermarket. 3) He likes shooting. 4) He shouted at him. 5) I always show my gift card to the check-out clerk so that I can get a discount
  61. Calculus

    If G(x)=(x)/(1+2x), find G'(a) and use it to find an equation of the tangent line to the curve y=(x)/(1+2x) at the point (-1/4,-1/2). My answer: G'(a)=1/(1+2x)^2 Equation of tangent line: y= 4x+0.5
  62. Calculus

    a particle starts at time t = 0 and moves along the x axis so that its position at any time t>= 0 is given by x(t) = ((t-1)^3)(2t-3) a.find the velocity of the particle at any time t>= 0 b. for what values of t is the velocity of the particle
  63. Geometry Help?

    Can anyone check my answers? * = My answer 1. Find the length of the missing side. Leave your answer in simplest radical form (1 point) The triangle is not drawn to scale. Sides 4 on the bottom and 3 on the side a. 25 b. 144 c. 5 d. √5* 2. Find the
  64. History Check My Answer!

    Hi! I just have 1 question that I need checking. Why did South Carolinians believe they had the right to secede from the Union? A. States had more power than the federal government B. The new president allowed South Carolina to secede C. They entered the
  65. algebra

    i need you to check my answers for the following questions: use the table to answer problems 1 to 4. the table lists the commuting times for 5 people. write each ratio in the form a/b, and then as a decimal. tell whether each decimal is a terminating or a
  66. Language Arts

    Can you check my answer? Matt hiked the trail yesterday. It made him tired. Which sentence combines the two sentences using a gerund phrase? A- hiking the trail yesterday made Matt tired B- Matt hiked the trail and it made him tired. My answer C-It made
  67. SOCIAL STUDIES (CHECK ANSWER)

    How did Spain's refusal to destroy Negro Fort affect Florida? It led General Jackson's troops first invasion of the territory It gave the seminoles an empowered stance against the United States It showed that Spain did not view General Jackson as a
  68. Social studies

    which of the following is true about textiles and georgia economy 1. the states textile industry has found it difficult to complete with overseas textile industries 2. four major carpet companies are located in goergia 3.georgia is a world leader in carpet
  69. Chemistry

    Which element is most important for helping eyesight? Se S As Pu Po I found this on the web. I don't now how reliable it is so check it out with yout text and class notes. I also found reference to Mn being important but that isn't in your list from which
  70. Calculus Please Help

    A continuous function f, defined for all x, has the following properties: 1. f is increasing 2. f is concave down 3. f(13)=3 4. f'(13)=1/4 Sketch a possible graph for f, and use it to answer the following questions about f. A. For each of the following
  71. Calculus Please Help

    A continuous function f, defined for all x, has the following properties: 1. f is increasing 2. f is concave down 3. f(13)=3 4. f'(13)=1/4 Sketch a possible graph for f, and use it to answer the following questions about f. A. For each of the following
  72. math

    hey i asked for help with accounting with a question i saw the same question at this site but when i click it it doesnt work is there anyway you can check it for me then what they posted there you can copy and post it here for me).my question was Tracy
  73. Calculus

    using the following information in place of that in the book. The machine earns the company revenue at a continuous rate of 50000 t + 35000 dollars per year during the first six months of operation, and at the continuous rate of $60000 per year after the
  74. Environmental Science

    Here is another part of my test that my teacher told me to check. Could you please help me check them? Write the letter of the term or phrase that best matches the description. Mississippi River- I picked b.recharge zone. area above an aquifer- Ipicked
  75. math

    Solve each equation. What am I doing wrong because the answer is suppose to be 11/2 and I don't get the answer. Here's what I'm doing... Problem: 2x+1/4-3x-4/5=1/2 I get: 10x+5-12x-16=10 Which gives me -2x=21 My answer is -21/2 the correct answer is
  76. algebra 1

    select an appropriate unit from the choices below and connect the rate to that unit. answer a - ft /s answer b - mph answer c - mm/s answer d - km/s question : A car traveling at 36 ft/s
  77. Calculus

    i was just wondering if there was a difference between infinty and indetrminant. my freind said there the same thing. But i thought that for example if you are given a limit for a function, by direct subsitution you find that answer is infity. the
  78. Calculus

    i was just wondering if there was a difference between infinty and indetrminant. my freind said there the same thing. But i thought that for example if you are given a limit for a function, by direct subsitution you find that answer is infity. the
  79. Calculus

    Two math students erect a sun shade on the beach. The shade is 1.5 m tall, 2 m wide, and makes an angle of 60° with the ground. What is the area of shade that the students have to sit in at 12 noon (that is, what is the projection of the shade onto the
  80. Calculus

    A rectangular swimming pool is to be built with an area of 1800 square feet. The owner wants 5-foot wide decks along either side and 10-foot wide decks at the two ends. Find the dimensions of the smallest piece of property on which the pool can be built
  81. Macroeconomics

    Please check my answers; stuck on a few questions on my homework. 1. In the long run, an increase in the supply of bank loans is matched by a __________ in the price level and the quantity of real loans is __________. A. rise; unchanged B. rise; increased
  82. Calculus

    For any constant c, define the function f_c(x)= x^3+2x^2+cx. (a) Graph y = f_c(x) for these values of the parameter c: c = -1, 0, 1, 2, 3, 4. What are the similarities and differences among the graphs, and how do the graphs change as the parameter
  83. Calculus

    For any constant c, define the function f_c(x)= x^3+2x^2+cx. (a) Graph y = f_c(x) for these values of the parameter c: c = -1, 0, 1, 2, 3, 4. What are the similarities and differences among the graphs, and how do the graphs change as the parameter
  84. Science

    Hey! so, I was just wondering if someone could check a few of my answers. 1. during what phase of the moon can a lunar eclipse occur? A. New moon B. First Quarter C. Waxing gibbous D. Full moon* 2. Which of the following is the smallest possible amount of
  85. Math, Can someone check my answers?

    Can someone please check my answers? Tell whether the given equation has the ordered pair as a solution. 11. y = 6x;(3,16) 13. y = -4x; (-2,8) 15. y = x - 3/4; (2,1 1/4) Answers: 11. Not a solution 13. Has a solution 15. Has a solution
  86. statistics

    An experiment consists of rolling a die and selecting a marble from a bag. the bag has 7 orange, 3 pink, and 6 grey marbles. What is the probability of rolling a multiple of 3 and selecting a pink marble? Anwer: The two events are independent of each
  87. Statistics

    An experiment consists of rolling a die and selecting a marble from a bag. the bag has 7 orange, 3 pink, and 6 grey marbles. What is the probability of rolling a multiple of 3 and selecting a pink marble? Anwer: The two events are independent of each
  88. SOCIAL STUDIES CHECK ANSWER

    In what way did the Alien and Sedition Acts change the authority of the federal government? A. The acts limited the amount of power delegated to each branch of government. B. The acts redefined the powers of the legislative branch C.The acts clarified the
  89. SOCIAL STUDIES CHECK ANSWER

    In what way did the Alien and Sedition Acts change the authority of the federal government? A. The acts limited the amount of power delegated to each branch of government. B. The acts redefined the powers of the legislative branch C.The acts clarified the
  90. calculus

    A ball is dropped from the top of a building. The height, , of the ball above the ground (in feet) is given as a function of time, , (in seconds) by y = 1640 - 16t^2 y'= -32t When does the ball hit the ground, and how fast is it going at that time? Give
  91. Calculus- continuity

    Discuss the continuity of f(x)= sin x/x^2 - 9 That is, state where is it continuous/discontinuous and why. Here was my original answer. sinx is cont. because it's a trig function. It's cont. at -2pi, pi, -pi, and 2pi. x^2 is cont. because it's raised to a
  92. Social Studies/American Government

    Could you check my answers by the way they have to do with the Missouri State Missouri State Constitution. Missouri State Constitution. 1. What is the Preamble? Answer: The Preamble is the first paragraph of the Constitution, and it states why the
  93. Calculus; Limits

    The percentage of research articles in a prominent journal written by researchers in the United States can be modeled by A(t) = 26 + (36/1 + 0.8(0.8)^−t'), where t is time in years (t = 0 represents 1983). Numerically estimate lim as
  94. Math

    Hello! Can you check my answers for these questions? Thank you in advance (= 1. The following ordered pairs give the scores on two consecutive 15-point quizzes for a class of 18 students. (7, 13), (9, 7), (14, 14), (15, 15), (10, 15), (9, 7), (14, 11),
  95. cal

    1. Given the function f(x) and g(x) below determine the following: A) f o g(3) ANSWER: B) f o g(-4) ANSWER: C) g o f(0) ANSWER: D) f o f(1) ANSWER: E) g o g(-2) ANSWER:
  96. Reading

    1. Everyone hates frozen peanut butter sandwiches. Answer: O Circle:Everyone 2. The secretary keeps the peanut butter sandwiches in a refrigerator in the faculty room. Answer:F 3. Money was stolen three days in a row from students. Answer: F 4. Diane is
  97. Calculus

    A company needs to make a cylindrical can that can hold precisely 1.5 liters of liquid. If the entire can is to be made out of the same material, find the dimensions (radius and height) of the can that will minimize the cost. Round your answer to the
  98. Math 6th Grade

    Can someone please help I been trying to figure this out for a long time and you guys help me? 2. Which of the following is a true statement? (1 point) A.) |–2| < |1| *** My answer B.) |1| < |0| C.) |–1| < |–2| D.) |1| > |–2|*** My
  99. Algebra (answer check)

    The population of a small town is decreasing at a rate of 6% per year. If the town's population is 12,500 in 2017, what will the population be in 6 years? 8,623 people 8,000 people <--? or D 17,731 people 9,416 Write the equation of the line that passes
  100. calculus

    Use integration by parts to evaluate the integral of x*sec^2(3x). My answer is ([x*tan(3x)]/3)-[ln(sec(3x))/9] but it's incorrect. u=x dv=sec^2(3x)dx du=dx v=(1/3)tan(3x) [xtan(3x)]/3 - integral of(1/3)tan(3x)dx - (1/3)[ln(sec(3x))/3] - [ln(sec(3x))/9]