Calculus (Answer Check)

87,537 results, page 37


Does a line of latitude or a line of longitude divide the Earth into Northern and Southern Hemispheres? This is an easy one but I just want to double check. The answer is a line of latitude. Right?


A buoy in a lake is 20 yards from Dock 1 and 20 yards from Dock 2. To the nearest tenth of a centimeter of a yard; how far apart are the two docks? Please check my answer. Thank you. id it 17.3 yards?? I'm lost

Geometry (Please check my work)

A segment has endpoints M(6,15) and N(-3,9). The image of the segmen for a dilation with center (0,0), has endpoints M'(2,5)and N (-1,3). What is the scale factor of dilation? A. 2<<<< B. 3 C. 1/2 D. 1/3 I'm not confident with this answer because I still don't ...


Can someone please check my answers. 1. Solve. –7x + 1 + 8x = x + 1 A) Identity B) No solution C) 1 D) 0 My answer: A) Identity 2.The length of one of the equal legs of an isosceles triangle is 8 cm less than 4 times the length of the base. If the perimeter is 29 cm, find ...


Please check the questions/problems along with my answers. Thank you tutors. Writing Ratios 1. Top-of-the-line monster masks are made of rubbery silicone, using a liquid silicone base and a catalyst (substance that speeds up a chemical reaction) in a ratio of 1 to 1. What is ...

Check my answers

Question 1.Choose the answer that identifies the case of the parentheses word. My grandparents always go to the square dances with the Warrens and (them). nominative objective possessive *** my answer none of the above Question 2. Choose the pronoun that best completes the ...

Math Check

Hi! Can someone check these two answers? Thanks! Directions: Find the correct number of solutions for the following system of equations. 1.) 5x - 3y + 2z = 3 2x + 4y-z = 7 x - 11y + 4z = 3 2.) 2x + y- 3z = 4 4x + 2z = 10 -2x + 3y - 13z = -8 A.) One Solution B.) Infinitely Many...


Robin and Emily are selling boxes of candy bars. Robin sells 36 boxes of candy and Emily sells 24 boxes of candy. Which expression, using the form a(b+c), represents the amount they sold together a. 2(12+24) b. 4(9+6) c. 24 (6 + 36) d. 12 (3 + 2) My answer is B 9+6=15x4=60 60 ...


caregiver behaviors such as ignoring children'ssound babbling back to baby or repositioning the child on one 's lap are indicative of variable levels of a imitative play b. pattern training c. responsivity awareness I CHOSE "c" AS MY ANSWER. PLEASE CHECK THIS FOR ME. ...


For i; j 2 N let (i; j) denote the ordered pair in the cartesian product N  N and fi; jg  N the subset consisting of the elements i and j. De ne the sets A and B as follows: A := f;; 1; 2; (1; 3); (3; 1); f1; 3g; f3; 1gg, B := f3; (1; 2); (2; 1); f1; 2g; f2; 1; 2gg. Check ...


Which of the following are structures that rely on capillaries for exchange or movement of small molecules? A. Teeth, aorta, ureter. B. Cartilage, epidermis, larynx. C. Nephron, villi, alveoli. D. Leukocytes, atrium, bronchi. Can you check this please, it doesn't really talk ...

History (Mrs. Sue, check answer?)

Which of these Transcendentalist writings had the most direct influence on African American activists in the 1950s and 1960s? (5 points) "Ambition" "Orphic Sayings" "Woman in the Nineteenth Century" "Two Rivers" I believe it is D. but want to make sure :)

History (check answer!)

During the mid-19th century, Transcendentalist writers had a strong influence over the formation of (5 points) labor unions new Protestant sects utopian communities*** nativist organizations I believe it's C. Can anyone assure this? Thanks :) I'll try and help back.


1. Which ideas from the deceleration of independece support women's suffrage? A) We hold these truths to be self evident B) life liberty and the pursuit of happiness C) governments are instuited among men*** D) deriving their just powers from the consent of the government


You posted an entire test and all the answers, which is one of the kinds of posts Jiskha's owner is regularly contacted to remove. Please post only the 4 or 5 questions you are least sure of, plus their answer choices and your selection. Then someone here will check your work.


I removed about ten questions you posted this morning. There was no indication of what you had done, what your thinking was, or what you wanted from us. We are not going to do homework for you. If you want hints on these calculus questions, say so, or ask what you want. Just ...


Please check my work! Thanks! 1. The employees of Abs “R” Us, which includes 12 fitness parlors in and around the metro area, feel they can improve the performance of the company. They decide to pool their resources to purchase the company. This would be called a _______ ...


i need to find the derivative using chain rule: (x^2 + 2x - 6)^2 (1-x^3)^2 i got the answer from a site but the problem is i cannot get my work to match up with the answer, i don't know what im doing wrong. answer: 10x^9 + 36x^8 − 64x^7 − 182x^6 + 168x^5 + 80x^4 + ...


What is the integral of 1-tan^2theta from 0 to pi/3? Using the identity tan^2theta=sec^2theta-1, I got my answer to be 2pi/3 - sqrt*3 Can someone verify this for me please?


I know the derivative of x is 1, but I'm having a hard time proving it with the limit definition of the derivative. I have... Lim delta x ->0 (x+ delta x)-(x)/delta x = 0 But I know the answer is 1. I don't understand what I am doing wrong


f is a continuous function with a domain [−3, 9] such that f(x)= 3 , -3 ≤ x < 0 -x+3 , 0 ≤ x ≤ 6 -3 , 6 < x ≤ 9 and let g(x)= ∫ f(t) dt where a=-2 b=x On what interval is g increasing? Justify your answer. For 0 ≤ x ≤ 6, ...


Use a calculator to approximate two values of theta (0 <= theta < 2pi) if csc theta = 1.03. Round answer to two decimal places.


Use a calculator to approximate two values of theta (0 <= theta < 2pi) if csc theta = 1.03. Round answer to two decimal places.

Clueless in calculus

Let f be the function be defined by f(x)=5^((2x^2)-1)^(1/2) A) is f an even or odd function? Justify answer. B) find the domain of f. C) find the range of f. D) find f'(x)

College Algebra

Can someone check my answer please! I'm not sure this is right x(squared)+7x+10=0 (x+r)(x+s) =x(squared)+sx+rx+rs =x(squared)+(r+s)x+rs x(squared)+(r+s)x+rs=x(squared)+7x+10 r+s=7 rs=10 (2)(5)=10 and 3+4=7 x(squared)+7x+10=(x+5)(x+2)

Math+ check!

oka so the question is as follows: for the geometreic sereis 8+48+288+... find the sum of the first ten terms, s 10 so I would use the formula: sn= a(1-r^n)/ 1-r were a= 8 r= 48 n= 10 8(1-(48)^10)/1-48 I get lost I don't know how to arrive to the answer from here! but is the ...

medical reimbursement methodologies

please check my answer thanks :) True or False By creating a committe on social welfare, the American Association of Labor Legislation helped to implement health care coverage for the working class and needy. I said True

Health/ Basic Clinical Procedures

Please check my answer thanks The patient states he smokes a pack of cigarettes a day. On what form should you record this information. A medical history B. progress note C. physical exam D medication record I pick A

Mah 157 check answer

Each letter of the alphabet is written ona separate piece of paper and placed ina box. FInd the probability of now drawing a vowel (a, e, i, o, u) or a letter in the word segments. is is 16/26 or do I need to break it down more ?


Which of the following may lead to claim denials or improper service reinbursement? A.Reporting of multiple APG B. HCPCS codes on out patient surgeries C.Inaccurate physicians documentation D. Updated ICD-9-CM codes (C) ic my answer can someone check this one for me.


1. Use MATLAB Optimization Tool to solve the following problem: minimize [2x1^2+2x1x2+x2^2-10x1-10x2] subject to [x1^2+x2^2≤500] and [5x1-x2 ≤ -4] . 2. Please hand-check all the Kuhn-Tucker conditions for your answer.


Dr. Jones is interested in how human behavior may be genetically inherited from remote ancestors, such as chimpanzees. Her field of interest is A. chemical psychobiology. B. evolutionary psychology. C. clinical neuropsychology. D. behavioral genetics. I chose D. Am I right ? ...

English 10

Which of the following is a possible setting for works of American literary realism? CHECK ALL THAT APPLY! *a. American West *b. Post-Civil War South c. New England d. Gold Coast I think there is one more that needs to be check, but I don't know which one it is. Can you please...


1) Solve for x and check Radical (x^2-10x)=3i 2) Simplify (5+ Radical 2)/(5-Radical 2) 3)describe the nature of the roots x^2-x-6=0 x^2+4x+29=0 4) Solve for x and check Radical (x^2 +4x +44) +3=2x I got 7 and -5/3 as answers, was not sure though

history - World War 1

hello anf good evening I'd like to ask What caused WW1 and was it inivatable ? I will research now and I hope that I will get a good answer and I'd like someone to check it ans see that is it true thankyou

teaching dogs tricks

please check my answer thanks When you're teaching class, you must be sure to A. keep to your schedule. B. make friends with each of the dogs. C. have room for bystanders to watch. D. observe and praise each student. I say D

Financing and Budget

If an employer fails to pay state employment taxes on a timely basis, the rate on FUTA taxes will A.remain the same lower C.increase by 100% D. increase I picked C can someone check my answer.

Financing and Budget

If an employer fails to pay state employment taxes on a timely basis, the rate on FUTA taxes will A.remain the same lower C.increase by 100% D. increase I picked D can someone check my answer.

Probability-Please check

Consider the experiment of rolling a single die. Find the probability of the event described. What is P(odd or prime? Since this is an "or" problem would the problem consist of 3 chances out of 6 thus my answer = 1/2?

Chemistry: Answers please check

1. The kinetic-molecular theory states that all particles of matter are always in motion. a.) True b.) False Answer: True 2. Gases have molecules in rapid random motion. a.) T


The question was: "Given that sin theta is -1/2 and theta is in quadrant IV, find the cos and tan of theta." I found 1/2 for cosine and -1 for theta, but the answer sheet said I was incorrect. I am almost positive I did this correctly... can someone double check for me?


A vending machine company wants to check three of its machines to determine if they are properly dispensing 12 ounces of coffee. Their data is given below. Reference: Ref 11-4 Compute the test value for the coffee machines. Answer 2.25 5.06 6.62 4.86

English Composition II

in writing a classification and division essay, _______ should introduce and elaborate on each of your essay's classification or divisions A. Topic sentences B. each body paragraph C. the introduction D. the conclusion I selected C. can someone help and check my answer thank you


Identify the following as either reduction or oxidation: a. 2I^- -> I2 + 2e- (my answer oxidized) b. Zn2+ + 2e^- -> Zn (reduced) could someone check my answers? I remember OIL RIG (oxidation is loss, reduction is gain.) but I'm still uncertain of what I answered.

Science. Answer Check

A kitchen ceiling light has five light bulbs on it. When one of the lights goes out, the other four bulbs stay lit. This is an example of a series circuit. True*** False

Math Answer Check

2.on which of the following lines does the point (7, 1) lie A. y - 5x = 4 B.y = x - 10 C. y=-4x + 3 D. y= -x + 8 Is it B? 3.Find the slope of the line through (-9, -10) & (-2, -5) A -5/7 B 7/5 C 5/7 D -7/5 Is it D? 10. The equation t=0.07c represents tax, t , based on the cost...


determine whether the number sentence is true. In each case explain how you could answer without calculating. Check your answers by doing the indicated calculations. A. 50 x 432= (50 x 400) + (50 x 32) B. 50 x 368 = (50 x 400) - (50 x 32) C. 50 x 800= ( 50 x 1000) + (50 x 200...


Use the shell method to find the volume of the solid generated by revovling bounded by the curves and lines about the x-axis. y= sqrt(x) y=0 and y=(x-5)/4. I tried thsi problem and got 775/6pi as the final exact answer and its wrong. please someone help!

Algebra II

Please check my answers With two parallel lines cut by a transversal, the number of pairs of alternate interior angles is equal to the number of pairs of corresponding angles. (1 point) Always Sometimes Never *I think the answer is sometimes Opposite angles in a quadrilateral ...


Please check my answers With two parallel lines cut by a transversal, the number of pairs of alternate interior angles is equal to the number of pairs of corresponding angles. (1 point) Always Sometimes Never *I think the answer is sometimes Opposite angles in a quadrilateral ...

Cultural Diversity

Will someone please check my answer to make sure I have chosen the most appropriate choice. 1. Gabriella speaks Spanish at home with her family and friends. She attends public school where she is learning some English and is instructed in English for all of the subjects. ...


Hi, Am I on the right track? Reading for an hour now..and wanted to check my answers.. Which modem uses the same medium used to transmit video signals" My answer: C. Cable ADSL BRI DiGITAL '2. Which is the fastest wireless standard? My answer: 802.11G 802.11b WAP WI-PRO 3. How...

prealgebra/ check answer please

If 1,790 Mega Watts of power, out of the 3,000 Mega Watts generated by a power utility, reach the destination, what percentage of the generated power reaches its destination? 1,790 - 3,000 = 1,210 1,790 divided by 1,210 = 1.4 Answer 1.4% Unsure


Could you check these thanks Directions: Vrai or faux? Part 1 1. Aux Etats-Unis chaque municipalité a son bureau de poste. Answer: Vrai 2. L'employé(e) des postes distribue le courrier et le facteur travaille au bureau de poste. Answer: faux 3. On ne peut pas acheter de ...

Language Arts - Romeo and Juliet - Please Check

I need help with the following: 11. Read these lines from the prologue of Romeo and Juliet. "Two households, both alike in dignity, In fair Verona, where we lay our scene, From ancient grudge break to new mutiny, Where civil blood makes civil hands unclean." What is the best ...


what is the derivative of ln(x-1)? If you are studying the calculus of logarithms your question surprises me, since that is one of the most basic ones in that topic. in general if y = ln("anything") then y' = 1/"anything" * derivative of "anything" just apply this rule and let...

chemistry(check my answer)

Which equation describes the relationship between the rates at which Cl2 and F2 are consumed in the following reaction? Cl2(g) + 3F2(g) yield 2ClF3(g) a)-d(Cl2)/dt = -d(F2)/dt b)-d(Cl2)/dt = 2[-d(F2)/dt] c)3[-d(Cl2)/dt] = -d(F2)/dt d)2[-d(Cl2)/dt] = -d(F2)/dt e)-d(Cl2)/dt = 3...

Calculus Please Help

Can someone please tell me how to do these? Suppose that f is given for x in the interval [0,12] by x= 0 2 4 6 8 10 12 f(x)= -14 -10 -6 -5 -6 -9 -11 A. Estimate f(2) using the values of f in the table. f'(2)=_______ B. For what values of x does f'(x) appear to be positive? ...


Suppose that 5 J of work is needed to stretch a spring from its natural length of 28 cm to a length of 36 cm. (a) How much work is needed to stretch the spring from 32 cm to 34 cm? (Round your answer to two decimal places.) (b) How far beyond its natural length will a force of...

algebra 2

1.Simplify the difference. n^2 - lOn+24 9 / n^2 - 13n + 42 — 7 A. n-13/n-7 <<< B. n-4/n-7 C. n-13 2.Simplify the complex fraction. y-1/y^2+y-6/y-6/y+3 A.(y-1)(y-6)/(y+3)^2(y-2) B. y-1/(y-6)(y-2) C.(y-1)(y-6)/(y+3)(y-2)<<< 3.Find the least common multiple of...


Please check my work 3M solution of NaOH (1 liter worth) molecular weight: 39.99 3 x 39.99= 119.97 grams dilute to 1000mL 3 M solution of HCl (1 L) c1v1=c2v2 (12M)(?)= (3M)(1000mL) ?= 250 mL please check thank you


Find k so that the following function is continuous on any interval: f(x)= kx 0 (less than or equal to) x (less than) 2 3x^2 2 (less than or equal to x) i know the answer is 12 but i don't know how to arrive at that. could you please walk me through the steps? thanks.


Find the values of x in the interval 0<=x<360 that satisfy the equation x=arcsin squareroot of 2/2. Express your answer in degrees. 360 degrees - 45=315 degrees. Is this right?

Calculus-Applied Optimization Problem:

Find the point on the line 6x + 3y-3 =0 which is closest to the point (3,1). Note: Your answer should be a point in the xy-plane, and as such will be of the form (x-coordinate,y-coordinate)


The rate of change of the population of a small town is dP/dt=kP Where P is the population, t is the time in years and k is the growth rate. If P=20000 when t=3 and P=30000 when t=5, what is the population when t=10? Round your answer to the nearest integer.

Language Art (Please Check)

please check 6.which of the following is a run-on sentence? A.terri had a hard time continuing the tour she was so tired from the day's events.(I PICK A) B.som students decided to rest,so they returned to their hotel. C.washington is a great place to visit because there are so...


solve the following logarithmic equation. Be sure to reject any value of x that is not in thedomain of the orginal logarithmic expression. Give the exact answer. log3(x+8)=4 The three actually drops down a little below the g. Can someone tell me how to do this?


Can you check these thanks Part 1: Choisissez 1. Il a eu un accident et on a appelé ----------. A. un anesthésiste B. le serivce des urgences C. un fauteuil roulant Answer: B 2. On a mis le blessé sur -------. A. son genou B. un pansement C. des fauteuils Answer: C 3. Elle ...


six employees of a small company were asked the distance they traveled to work, to the nearest tenth of a mile. find the range of the distances: 2.7,5.9,1.7,4.7,6.9,3.5 This site demonstrates how to find the range of a group of numbers.


The following thermodynamic data was obtained for an unknown compound. Delta Hvap = 31.3 kj/mol and Delta S Vap= 79.7 kj/mol .Calculate the normal boiling point of this compound in Celcius.. Thank you! Chemistry - DrBob222, Tuesday, April 30, 2013 at 12:31am dG = dHvap - ...

Physics--check answers please

1. Resolve an acceleration vector of 40m/s^2 [25 degrees E of S] into its components For this I got 17 as my x component and 36 as my y component 2. A player is positioned 35m [40 degrees W of S] of the net. He shoots a puoock 25m [E] to a teammate. What second displacement ...

Law and ethics in med

please check my answer thanks :) Sally sues for malpractice, claiming she didn't know that the operation could have ( and in this case did have)negative consequnces. Your office has a copy of an informed consent signed by Sally. How will this affect her case. My answer Sally's...

chemistry-check answer

Suppose you have a 10 watt fluorescent light bulb. If this light bulb is 6 % efficient in turning electricity into light, then how many photons are being emitted per second? Assume that average energy of all the photons emitted is 550 nm, thus you can treat all the photons as ...

infinite discontinuity

How do check the graph of a function has an infinite discontinuity at a point or not? (without the help of a graphing calculator) example: Check whether y = (x^2-9)/(3x-9) has an infinite discontinuity at x = 3 or not CAn you get rid of the denominator? (x+3)(x-3)/3(x-3) in ...


George lies about the cause of Lennie's mental deficiency. Why does he change the story from the truth? My Answer- He thinks the boss won't give them jobs if he knows the truth. What is the truth? Is it that Lennie was born w/ it?

law Ms Sue please re check my answer

i have to pick from the following informed consent disclosure substituted consent Regaurding the question a minor needs an operation the parent consent to the operation

Algebra II-Please check

Please help-What is the equation of the ellipse with foci (0,6), (0,-6) and co-vertices (2,0),(-2,0) Please explain the steps because I have 5 to do for homework-Thank you-I'm really stuck on this I thought the answer would be x^2/4 + y^2/40 = 1 but that can't be because the ...

Algebra II Please check-

Please help-What is the equation of the ellipse with foci (0,6), (0,-6) and co-vertices (2,0),(-2,0) Please explain the steps because I have 5 to do for homework-Thank you-I'm really stuck on this I thought the answer would be x^2/4 + y^2/40 = 1 but that can't be because the ...

Chemistry(Please check)

1) Which one of the following molecules is the most polarizable? a) H3C – I b) H3C – CH3 c) H3C – F d) H3C – H e) H3C – OH I chose H3C-I as the answer because the mm was the greatest. I added the mm of H, C, and I and got 141.934. Did I do this correctly?

math (please check answer)

What type of graph does not show the number of times a response was given? box-and-whisker plot****** line plot stem-and-leaf plot bar graph


I the question is simple but I haven't done fractions in a while. So check my answer please. Are and  equivalent fractions? A. No B. Yes, because both fractions are divisible by 2.**** C. Yes, because the difference between the denominator and numerator in each fraction is ...


Lucy earned $18 babysitting on Friday and $20 babysitting on Saturday. On Sunday, she spent half of the money. Which expression matches the words? a. 18 + 20 division sign 2 b. (18 + 20) division sign 2 c. 2 x (18 + 20) d. 2 x 18 + 20 My answer to the above would be B A ...


please check these: 1. which of the following statements applies to the motion of a ball rising and then falling in free fall? I.The ball has constant acceleration as it moves upward. II.The ball has constant acceleration at the top of its path. III.The ball has constant ...


integral 0 to sqrt(3) dx/sqrt(4-x^2) I don't understand why the answer is pi/6. I get pi/3. Thanks for the help! Work: u=x/2 du=1/2dx 2du=dx 2/2sqrt(1-u^2) sin^-1(x/2) sin^-1(sqrt(3)/2)= pi/3


Let f be the function be defined by f(x)=5^((2x^2)-1)^(1/2) A) is f an even or odd function? Justify answer. B) find the domain of f. C) find the range of f. D) find f'(x)


Let f be the function be defined by f(x)=5^((2x^2)-1)^(1/2) A) is f an even or odd function? Justify answer. B) find the domain of f. C) find the range of f. D) find f'(x)

Check please science

Cells are to tissues as organs are to 1 ORGAN SYSTEM 2 CELLS 3 GENES 4 ORGANELLES IS THE ANSWER 1 ORGAN SYSTEM Which of statements about cells is not true? 1. One or more cells make up all living organisms 2 cells carry on the basic life functions of living organisms 3 cells ...

Calculus check and help

Let f and g be the functions given by f(x)=1+sin(2x) and g(x)=e^(x/2). Let R be the shaded region in the first quadrant enclosed by the graphs of f and g. A. Find the the area of R. B. Find the value of z so that x=z cuts the solid R into two parts with equal area. C. Find the...


The function V=4pir^2 describes the volume of a right circular cylinder of heigh 4ft and radius r feet. Find the (instantaneous) rate of change of the volume with respect to the radius when r=6. Leave the answer in terms of pi.


Suppose that a colony of fruit °ies is growing according to the exponential law P(t) = P0ekt, and suppose that the size of the colony triples in 11 days. Determine the growth constant k. [You may leave your answer as a fraction, with logarithm(s) in it.]


Find the volume of the solid obtained by rotating the region bounded by the given curves about the specified axis. y=x^2, x=y^2, about the axis x=-5... i just cant seemt to get the numbers to work out well and get answer please help...thanks


Use the Fundamental Theorem to evaluate the integral from 0 to 3 of the quantity x cubed minus 6 times x, dx. (Your answer must include the antiderivative.) Use a graph of the function to explain the geometric meaning of the value of the integral.


The table below shows the populations of four countries for the year 2006 expressed in scientific notation. Population in 2006 Country Population Lebanon 3.90 × 106 Mexico 1.08 × 108 Peru 2.84 × 107 Spain 45.5 × 106 Of the countries listed, which one had the largest ...

calculus problem I have tried 100 times

A tank in the shape of an inverted right circular cone has height 5 meters and radius 4 meters. It is filled with 2 meters of hot chocolate. Find the work required to empty the tank by pumping the hot chocolate over the top of the tank. The density of hot chocolate is δ=...


The position of a particle at any time t >= 0 is given by p(t) = -t^3 + t^2 + 5t + 3. How far does the particle travel during the first six seconds? I calculated the distance traveled between the endpoints of the interval and the points at which the particle changes ...

Calc 1

Consider the following function. f(x) = x^6 ln x (a) Use l'Hospital's Rule to determine the limit as x → 0+. (b) Use calculus to find the minimum value. Find the interval where the function is concave up. (Enter your answer in interval notation.) Find the interval where ...

please help calculus

find the volume of the solid formed by revolving the region bounded by y=e^x, y=0, x=o and x=1 about the y axis by using the shell method, i got v=2*pi int(o to 1) (x)(e^x) dx and my teacher said the answer is e/2 but i keep getting a different answer Are you sure it is to be ...


If f(x) = abs(x - 1) + 1, then f'(1) = ? Would the answer be 0 or nonexistent. f'(1) = 0/0, so would this be considered nonexistent?

Please check my math questions.

I only need y'all to check my responses. Thanks in advance! Is (0,3) a solution to the equation y=x+3 Yes**My choice No Is (1,-4) a solution to the equation y=-2x Yes No**My choice


F(x) = cos(x) • the integral from 2 to x² + 1 of e^(u² +5)du Find F'(x). When i did this, i got: -2xsin(x)e^((x²+1)² + 5) But my teacher got: -sin(x) • the integral from x² + 1 of e^(u² +5)du + 2xcos(x)e^((x²+1)² + 5) Do you know why the integral is in his answer? ...


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