Pre- Calculus

21,812 results, page 55

  1. calculus

    If dy=(2x+1)dx and y=7 when x=1, find the value of y when x=3.
  2. Calculus

    Differentiate this y = 1 - cos^2 x
  3. Calculus

    Differentiate this y = 1 - cos^2 x
  4. Calculus 1

    Find f o g o h. f(x) = x + 9, g(x) = 3x, h(x) = x − 5
  5. Calculus

    How do you simplify vectors? 1)AB + BC + CD 2) BC - FE - BA + DE - DC
  6. Calculus

    Differentiate. g(x) = 5e^x√x
  7. calculus

    why is sec(pi)x = (1/pi)secx
  8. calculus

    Evaluate ¡Ò(9tanxcosx+5)dx
  9. Calculus

    Integrate e^(-t/r) WITH RESPECT TO dt?
  10. calculus

    what are the inflection points of 5x^2-45/x^2-25
  11. Calculus

    Find the derivative of y=(2*x^(3/2))/(x^2+5)
  12. calculus

    Find the derivative of y=(7x^(1/3))/(x^2+9)
  13. calculus

    Anti-Derivatives 2x^6-x^3/x^2
  14. Calculus

    Find the integral of 2/((2-x)(x+2)^2)dx.
  15. Calculus help plz

    Integrate:(K+1/k^2+4k+8)dx
  16. Calculus

    If f(x)=x^4, compute f(-2) and f'(-2) f(-2)=___ <--- ?
  17. Calculus

    Let f(x) be defined by f(x) = x/(x - 4). What is the image of f?
  18. Calculus

    how to make (x-3)^(2n)/4^(n) converge
  19. calculus

    Find f'x given f(x)= 1/(1+(1/(1+(1/x))))
  20. calculus

    find the derivative of d^2x/dt^2 if x^3=at^2 thanks
  21. integral calculus

    help me integrate dx/(3x^3-5)^3 thanks
  22. Calculus

    Inflection point of 3y=x^3+3x^2-9x+3
  23. Calculus

    lim x--> 2+ (tan(pi/x))
  24. Calculus

    F(x)=2x^2-log(x+5)/√16+x
  25. Calculus AB

    If csc x = -2.5, what is the value of x?
  26. Calculus AB

    Solve graphically (x-2)^3(x+4)(3-x)^2(x+1)^4 <0
  27. Calculus

    Find dy/dx. e^(xy)=sin(x)
  28. calculus

    Find the product [ 3 8 ] [ 4 5 ] 6 3 4 4
  29. Calculus

    Find the zero(es) of f(x) = (e^(7-2x)) - 1
  30. Calculus

    e^(1+2lnx) ----------- x^2 simplify
  31. Calculus

    (kx^2)+m, x<-2 g(x)=e^(ln(2x+3))-2<x<3 kx-m, x>3 Find values of k and m
  32. Calculus integrals

    (e^(3x)-2e^(2x)+(5e^x))/(e^x+1) how do I do this what is the techniques??
  33. Calculus

    What is the unit vector of v: <-6, -8>?
  34. Calculus

    If f(x) = 2xsqrt(x-6), what is the value of (f^-1)(40)?
  35. calculus

    y'? 1.y=arctan(a+x/1-ax); a is constant 2.y=e^x-e^-x/e^x+e^-x
  36. Calculus

    What is the absolute value of: 3 - 8i? A. 9 B. 64 C. √55 D. √73
  37. Calculus

    Suppose that f(x+h)-f(x) =-4 h x^2 - 1 h x + 4 h^2 x + 3 h^2 -3 h^3. Find: f^1(x)
  38. Calculus

    Evaluate ∫tan(3x)dx
  39. Calculus

    Sinx=e^y , 0 <x <pi, what is dy/dx in terms of x?
  40. Calculus

    If f(x)=(x^2+1)^(2-3x), then f'(1) = -3/2ln(2)-1/2 Is this correct?
  41. Calculus

    Find f'(1) if f(x)=(h(x))^3 Chart: x= -3,-2,-1,0,1,2,3 g(x)= 0,1,3,2,0,-2,-3 h(x)= 1,2,0,3,-1,-2,0 g'(x)= 1,2,-1,-2,-2,-1,0 h'(x)= 0,-3,-2,3,-2,0,1
  42. Calculus

    How do you fine the derivative of (x-3)^-3
  43. calculus

    limx-->3 sin 3x/4x
  44. Calculus

    Integrate x^2/(sqrt(x^2-25)dx
  45. Calculus

    Integrate sqrt(16+x^2) dx
  46. Calculus

    What is y=-2/7x-1 in standard form?
  47. Calculus

    What is the function y (x) if it statisfies Y"=6 y'(1)=4 and y (1)=6
  48. calculus

    Evaluate the integral. from 1 to 5 (ln(x))^2/x^3 dx.
  49. Calculus

    Find f if f''(x)=2+cos(x) f(0)=5 f(pi/2)=−3
  50. Calculus

    Find the derivative f'(x)= : f(x)=∫[2,x] ((1/2)t^2-1)^8 dt
  51. Math - Calculus

    g(x)=∫[6x,3x] (u+2)/u-5) du Find g'(x)
  52. Calculus

    What how do you compute the sum of 1/2 + 1/4 + 1/8 + 1/16 + 1/32 +++ 1/2N ?
  53. Calculus

    What how do you compute the sum of 1/2 + 1/4 + 1/8 + 1/16 + 1/32 +++ 1/2N ? ..
  54. calculus

    Differentiate the function. f(x) = e^7
  55. calculus

    Differentiate the function.((x^2)-((3x^2)(ln(4x))))/(x^6)
  56. Calculus

    A function has f''(x) = 10 and has f'(4) = 0 and f(2) = 4. Find f(x).
  57. Calculus

    A function has f''(x) = 10 and has f'(4) = 0 and f(2)= 4. Find f(x).
  58. Calculus

    A function has f’’(x) = 10 and has f’(4) = 0 and f(2) = 4. Find f(x)
  59. calculus

    y= x / (x^2+x) what are the discontinuities on this graph ?
  60. Calculus

    Find d/dt integral[2 to x^2](e^x^3)dx
  61. Pre-calc

    A cardboard box with an open top and a square bottom is to have a volume of 45 ft3 . Use a table utility to determine the dimensions of the box to the nearest 0.1 foot that will minimize the amount of cardboard used to construct the box.
  62. 7th grade accelerated math / pre algebra

    write two equivalent expressions for the area of the figure the figure is a triangle inside the triangle it says x + 4 and the #16 is written along the length of one side of the triangle. The answer is 8(x +4) and 8x + 32 but I don't know how they got it
  63. Pre-Cal: Limacons

    Write the equations for two limacons (and if possible graph), (one sine and one cosine) with the same a and b values. (A does not have to equal b). You may choose to use cardioids or inner loop, dimpled, or convex limacons.
  64. calculus

    find the circular cylinder of greatest volume that can be inscribed in a right circular cone with altitude 20 cm and diameter of base 10 cm. please answer in detail ..... so at a height h, the radius is 5(1-h/20) check that. VolumeCone= PIr^2 H = PI h * 25(1-h/20)^2 find dV/dh...
  65. Pre-Algebra

    in- 0 1 2 3 4 X out- 1 4 10 0's output is 1 and 1's output is 4, then 3's output is 10....wat is the rule to this??? and wat are the outputs for 2, and 4?
  66. Pre-Algebra

    in- 0 1 2 3 4 X out- 1 4 10 0's output is 1 and 1's output is 4, then 3's output is 10....wat is the rule to this??? and wat are the outputs for 2, and 4?
  67. Pre-Calc

    Show that cos(pi - θ) = -cos θ for every angle θ
  68. Pre algebra

    the temperature in canada is -8 degrees. the temperature drops 5 degrees. what is the current temperature?
  69. Pre Cal.

    So I posted these...but no one answered them. Are they right? Solve 4sin^2 x + 4sqrt(2) cos x-6 = 0 for all real values of x. My answer: (pi/4)+2(pi)k, (7pi/4) + 2(pi)k Solve 2cos^2 x-5cosx+2=0 for principal values of x. My answer: 60 and 300 degrees
  70. Pre-Cal

    Hi, can someone please solve this step-by-step for me? I really don't get it... Directions: Use the quadratic formula to solve the equation in the interval [0,2PI). Then use a graphing utility to approximate the angle x. 4cos^2x-4cosx-1=0 thanks.
  71. INDO european languages

    The Indo-european parent language was first spoken by a pre-historic people in: A} Western europe B} Middle east C} Northern india D} Southeastern europe .The answer i choose is C. Am i correct?
  72. 7th grade Pre algebra( math honors0

    triangle ABC is smilar to triangle FED Ab= 12 Ac=15 De=4 df=5 1. write three equal ratios to show correspnding sides are prosportional. 2. find the value of bc 3. find the value of ef.
  73. pre-algerbra

    A farmer is building a square pen 21 feet on each side. He puts one post at each corner and one post every three feet in between. how many posts will he use. please give equation
  74. Pre-Cal

    [Note: I'm still having issues with identities with regard to trig] Verify the Trig. identities: (a). cot(x+y)=(cotxcoty-1)/(cotx+coty) (b). sin0(cot0+tan0)=sec0 [Note: 0=theta symbol]
  75. pre-cal: one-to-one property

    i am not sure how to do these problems... *use the one-to-one property to solve the equation for x* 1. 2^(x-2)= 1/32 2. e^(x^2-3)=e^2x
  76. Pre calc

    Someone please help me prove these A) cos^4x-sin^4x=cos2x B)tanx=sin^2x/1+cos^2x Please and Thank you
  77. Pre calc

    Someone please help me prove these A) cos^4x-sin^4x=cos2x B)tanx=sin^2x/1+cos^2x Please and Thank you
  78. maths pre ap

    Krispy Krunch cereal is 49% sugar. about how many ounces of sugar are in a 16 oz box of Krispy Krunch?
  79. PRE-CAL

    How can I solve this questions and get those answers???? answers sec 13pi/4=? =>-ã(2) csc 13pi/4=? =>-ã(2) sec (-pi/6)=? =>2ã(3)/3
  80. pre algebra

    Triangle XYZ has vertices X(- 1, 1), Y(- 3, 1), and Z( -2, 5). Reflect triangle XYZ in the y-axis. Find the vertices of the image
  81. math pre calc

    solve sin theta = 1/2,90 degrees less than theta less than 180 degrees
  82. Pre cal

    In a sinusoidal,function, how do you determine whether or not y= sin4(x) has a period of 2 pi If it is equal to 2 pi then what is a sinusoidal function that is not equal to 2 pi
  83. Geometry

    A pre-image segment with endpoints (3,-2) and (4,2) is dilated to the image segment with endpoints (9,-6) and (12,6). What is the scale factor for the dilation?
  84. Pre Algebra

    A spoke on the bike wheel is about 12 inches long. The diameter of the wheel is about how many inches?
  85. Calculus

    I know I posted this problem earlier but I don't think it will be seen anymore since it's almost at the end of the page: Find the total mass of the triangular region with coordinates (-1,0),(0,4),and (1,0). All lengths are in centimeters, and the density of the region is (x)=5...
  86. Calculus

    Can someone check my work and answer? Evaluate the integral from -1 to 0 of (4x^6+2x)^3(12x^5+1)dx My work: let u=4x^6+2x dx=du/24x^5+2 now we have the integral from -1 to 0 of u^3(12x^5+1)(du/24x^5+2) Simplifies to the integral from -1 to 0 of u^3(1/2+1/2) simplifies to the ...
  87. pre calc

    Find the values of b such that the system has one solution. x^2 + y^2 = 36 y= x+b and then they give me an answer box b=_________ (smaller value) b=_________ (larger value) i have absolutely no idea how to even begin this and what they are asking. could some please help and ...
  88. pre-calc please help!!

    an open box with a volume of 1500cm cubed is to be constructed by taking a piece of cardboard of 20 cm by 40 cm, cutting squares of sides length x cm from each corner and folding up the sides. show that this can be done in two ways, and find exact dimensions of the box in each...
  89. Chemistry

    Consider the data below Temperature(0C) Diffusivity(m2/s) 736 2 x 10-13 782 5 x 10-13 835 1.3 x 10-12 Given this data, determine the activation energy for the diffusion process (units of Joules per atom or molecule) in this material and the pre-exponential factor (use units of...
  90. Finance

    12. Your current $155,000 mortgage calls for monthly payments over 25 years at an annual rate interest rate of 6 percent. If you pay an additional $50 each month beginning with the first payment, how much interest expense do you save by pre-paying?
  91. Pre- Algebra

    out of 245 students, -218 students like the program -27 do not find the program necessary. if a circle graph were made from this data, what would the measure of the central angle be for the group who likes the survey? round to the nearest whole number
  92. Math

    Two hundred tickets were sold for a concert. Forty percent of the tickets were pre-sold. How many tickets were sold at the door?
  93. calculus

    hi! just needed help on an FRQ for ap calculus ab. let me know if you have any questions for me. I'm just really confused as far as what I am meant to do. If you could walk me through it that would be amazing. THANKS!! A population is modeled by a function P that satisfies the...
  94. Pre-Calc (Point of Inter.)

    A diagonal of a cube is a line segment of maximum length whose endpoints are vertices of the cube. To the nearest degree, what is the angle of intersection Ѳ, 0 < Ѳ <= 90° between two distinct diagonals of the same cube?
  95. Calculus

    I am doing the AP calculus review, these are the questions I have no Idea on how to do: 1. if 0<= k <=pi/2 and the area under the curve y-cosx from x=k to x=pi/2 is 0.2, then k= 2. let F(x) be an antiderivative of (ln x)^4/x If F(1)=0, then F(9)= 3. What is the equation ...
  96. pre-algebra..7th grade

    Story Problem Some friends are recording songs on a CD. The first 1/5 of the CD has Alex's songs.The next 12 minutes of songs are Henrique's. 1/3 of the time is Brian's songs. Sally has 32 minuites. How many minutes of music are there in all?
  97. pre cal

    A movie theater seats 400 people. For any particular show, the amount of money the theater makes is a function m(n) of the number of people, n, in attendance. If a ticket costs 2 dollars, find the domain and range of this function
  98. Pre-Calculas

    The voltage E of an alternating current electrical circuit can be represented by the sinusoidal function E = 220 cos( t), where E is the measured in volts and t is measured in seconds. How long does it take the alternating current to complete one full cycle?
  99. Pre-Algerbra

    Someone help explain? Justin wants to use 188 ft of fencing to fence off the greatest possible rectangular area for a garden. What dimensions should he use? What will be the area of the garden? ~ A. 89 ´ 99 ; 8811 ft B. 92 ´ 96 ; 8832 ft C. 94 ´ 94 ; 8836 ft D. 93 ´ 95 ; ...
  100. Pre-Calc/Trig

    A body was found at 6 a.m. outdoors on a day when the temperature was 50oF. The medical examiner found the temperature of the body to be 66oF. What was the approximate time of death? Use Newton's law of cooling, with k = 0.1947. A. Midnight (12 a.m.) B. 5 a.m. C. 2 a.m. D. 3 a.m.
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