Pre- Calculus

21,815 results, page 68

  1. Calculus

    True or False If f is continuous at x = c, then f is differentiable at x = c.
  2. Calculus

    Use the table below to evaluate d/dx [f[g(2x)]] at x = 1 x 1 2 3 4 f(x) 6 1 8 2 f '(x) 6 1 8 2 g(x) 1 4 4 3 g '(x) 9 5 5 -4
  3. Calculus

    Find max or min: y = x * cosx
  4. Calculus

    Find the area bounded by the y-axis and x = 4-y^2/3
  5. Calculus

    Find the area bounded by the y-axis and x = 4-y^2/3 Thanks!
  6. Calculus

    (2x + sin x)/x What is the limit as x approaches zero?
  7. Calculus 1

    Find an expression for a cubic function f if f(1)=8 and f(-1)=f(0)=f(2)=0
  8. Calculus

    (3x |x-2|) / x-2 What is the limit as x approaches 2 from the left side?
  9. Calculus 1

    simplify the expression. cos(2 tan^-1 x)
  10. integral calculus

    integrate. (1):sin2xcos3x (2):5(cos3x)^2
  11. Calculus

    Differentiate y=[(8x-x^6)/(x^3)]^(-4/5) My answer: [4x^3(16+3x^5)]/5 • fifth root of [(8x-x^6)/(x^3)] ^9
  12. calculus

    Find the exact length of the curve. x=(y^4)/8+1/(4y^2), 1 ≤ y ≤ 2.
  13. Calculus 1

    Find the horizontal and vertical asymptotes of (3x^2-48)/(x^2-3x+10)
  14. Calculus

    limit (x^2+y^2)/(x+y)^2 as (x,y)->(0,0) I don't know how to prove it doesn't exist. Please help!
  15. math,(integral calculus)

    Integrate with respect to x:4x^2.dx
  16. HELP HELP CALCULUS

    y=e^(5e^x) differentiate first and second derivative
  17. Calculus i need help

    Find dy/dx if x^2.y+sin(xy)+y^4.x^2+3xy=5???
  18. Integral Calculus

    Initial Value Problem dy/dx = y^2 -5y+6 y(0)=1
  19. Calculus

    What is the shortest distance from the surface xy+6x+z^2=33 to the origin?
  20. Calculus 1

    find the critical numbers of the function F(x)=x^(4/5)(x-1)^2
  21. Calculus

    Integral sign 8x/(x-1) dx Is it 8x+8ln abs (x-1)+C ?
  22. calculus

    find the area of the region: y=4 y=2sqrt(x) y=3-x
  23. Calculus need help

    Dy/dx=x+x^3/y plz show your work
  24. Reposting calculus help plz

    Dy/dx=(X+x^3)/y help show working
  25. Another Calculus help plz

    Show that if y=tanx/2 dy/dx=1/sinx
  26. Calculus help!!!

    X^2y+sinxy=e^xy i need solution plz
  27. Calculus

    Suppose that f(t)=Qoa^1=Qo(1+r)^t with f(4)=72.2 and f(10)=176.7. Find what a is and what r is.
  28. Calculus

    Suppose that f(5) = 3, f '(5) = 4, g(5) = −6, and g'(5) = 1. Find the following values. (a) (fg)'(5) (b) (f/g)'(5) (c) (g/f)'(5)
  29. Calculus

    Reverse the order of the double integral (y+1) dx dy, where -1<= y <= 4 and y - 4 <= x <= 4y-y^2
  30. calculus

    Find the maximum value of the function f(x)=(x^2+9x-3) / x^2
  31. Calculus

    find the point on the plane 5x+4y+z=12 that is nearest to (2,0,1)
  32. calculus

    Evaluate π ∫ tan² x/3 dx 0
  33. calculus help

    integrate:dx/(3x^3-5)^3 help plz show step
  34. calculus

    evaluate the definite integr 2 ∫ 5/(3+2x) dx 0
  35. calculus

    evaluate the definite integr 2 ∫ (x+1/x)² dx 1
  36. calculus

    Find the limit lim x ->0 (sin^2 2x)/(x^2)
  37. Calculus

    For the curve given by 4x^2 +y^2 = 48 + 2xy show that dy/dx =y-4x/y-x
  38. Calculus

    given d/dx[f(2x)]=f'(x) and f'(1)=1 find f'(2) the choices are 1/4, 1/2, 3/4, 3/2, or 5/2 if it helpes
  39. Calculus

    Which of the following grows faster than e^x as x--> infinity x^4 ln(x) e^-x 3^x .5e^x
  40. CALCULUS

    State the intercepts, domain and range for y= |0.5x^2-2|.
  41. Calculus AB

    What is an algebraic expression for cot(arccos ((x+1)/2)?
  42. Calculus AB

    If r and s are roots of the pokynomial equation x^2 + bx + c, show that b=-(r+s) and c=rs
  43. calculus

    Find the Maclaurin series of xcos(x^2).
  44. Calculus

    Find arccos (sqrt2/2). Can this be pi/4 and 7pi/4?
  45. calculus help me

    help find dy/dx if y=cot(x+y) working plz
  46. Calculus

    Determine the equation of the tangent to f(x)= (1/x)+x at the point (1,2)
  47. Differential calculus

    Differentiate the following y=root(e^x)/x
  48. Calculus

    Given the vectors u = <−3,7> and v = <5,1>, find -½ u. A. <-1,-4> B. <-4,-1> C. <3/2,-7/2> D. <-3/2,7/2>
  49. Calculus

    Given the vectors u = <−3, 7> and v = <5,1>, find 3u + 2v.
  50. Calculus

    Given: u <-1, 7> and v <4, -3> What is the measure of the angle between them?
  51. Calculus

    How many critical points does the function f(x) = e^x - x^3 have?
  52. Calculus

    Let F(x)=f(x^4) and G(x)=(f(x))^4. You also know that a^3=15, f(a)=2, f′(a)=4, f′(a^4)=12. Find F′(a) and G′(a). I don't even know where to begin.
  53. Differential calculus

    Sketch the graph of the curve y=(x-2)(x+1)(x+3)
  54. Calculus

    Find dz/dy for the following : xln(1-2y) = zsin((x^2)z)-3y+z
  55. Calculus

    Determine the relative extremum for the function , f(x,y)=((x^2)+(y^2))(e^-x)
  56. Calculus

    Given: r = 4/(-2-6sinθ) What is the eccentricity of the function? A. 2 B. -2 C. 3 D. -3
  57. Calculus 1

    In the problem, x and y are differentiable functions of t. Find dx/dt when x = 3, y = 4, and dy/dt= 2. x^2 + y2^2= 25
  58. Calculus 1

    In the problem, x and y are differentiable functions of t. Find dx/dt when x = 3, y = 4, and dy/dt= 2. x^2 + y2^2= 25
  59. Calculus 1

    In the problem, x and y are differentiable functions of t. Find dx/dt when x = 3, y = 4, and dy/dt= 2. x^2 + y2^2= 25
  60. Calculus

    For what value of k will x+k/x have a relative max at x=-2
  61. Calculus

    If u,v, and w are nonzero differentiable functions, then the derivative of uv/w is what?
  62. calculus

    Find the local linear approximation of f(x) = e^(3x) at x = 1. y = e^3 y = e^(3(x − 1)) y = 3e^(3)(x − 1) y = 3e^(3)x − 2e^3
  63. Calculus

    Find the second difference for the sequence. 7, 6, 7, 10, 15, 22, …. A.1 B.2 C.3 D.5
  64. Calculus

    Find a quadratic model for the sequence. -4, -4, -3, -1, 2 A.y = 0.5x^2 - 0.5x - 4 B.y = 0.5x^2 - 1.5x - 3 C.y = 4.5x^2 - 21.5x+21 D.y = -4.5x^2 + 21.4x - 21
  65. calculus!

    use the definition of derivative to find d/dx(1/(3-x))
  66. calculus

    solve for dy/dx=(x^2+y^2)/xy by substitution. Plz help step
  67. calculus

    (2y-1)dy/dx=(3x^2+1) given that x=1 when y=2 plz show step thanks
  68. Calculus Please Help

    evaluate the table and find d/dx [g[f(2x)]] at x=1 f(x) 6,1,6,2 f'(x) 1,2,5,7 g(x) 1,4,4,3 g'(x) 4,5,5,-4
  69. Calculus

    y = 2 cos(5πx) .... whats the period?
  70. Calculus

    Compute F'(-4) where F(x) = x^3 + X^2 (using the definition of the derivative)
  71. calculus

    limx--->3- 5/x-3 I think it is -inf but I don't know how to prove it
  72. Calculus

    Find the derivative of the integral from x to 6 of ln(1 + t^2). My answer is -ln(1+x^2).
  73. Calculus

    Solve the initial value problem. 7x^6-3x^2+5 and u = 1 when x = 1. Is this x^7 - x^3 + 5x - 4?
  74. calculus

    Find the centroid (¯ x, ¯ y) of the region bounded by: y = 6x^2+7x, y = 0, x = 0, and x = 7
  75. Calculus (related rates)

    Find dy/dt when y = 2x2 + 2x + 4 and dx/dt = 14 when x = 7.
  76. Calculus (related rates)

    Find dy/dt where y = 2 sqrt(x)-4 and dx/dt = 9 when x = 4.
  77. calculus

    Evaluate the integral. from 0 to π/2 sin^3(θ)cos^5(θ) dθ
  78. Calculus

    If y′= x(1+ y) and y > -1 , then y = The differential equation dy/dx=y/x^2 has a solution given by:
  79. Calculus

    If y′= x(1+ y) and y > -1 , then y = The differential equation dy/dx=y/x^2 has a solution given by:
  80. Calculus

    Consider the function f(x)= x^3+5 sqrt(x) Let F(x) be the antiderrivative of f(x) with F(10=-9
  81. Calculus

    Determine the remainder for Sn where n=5 or n=9 for the following series. ∑n=1 to ∞ (n^2+1)/(n^4) S5= R5= S9= R9=
  82. Calculus

    At what point is the function y=csc(2x) continuous?
  83. calculus

    Find the interval, I, of convergence of the series n=0 [((-1)^n)(x-5)^n]/(3n+1)
  84. Calculus

    How do we integrate [(cosx)^2(nx)(sin(nx))]/[a-(cos(nx))] dx?
  85. calculus

    Find the derivatives of the following function: i)y=-3x^-3 +2x^-2 + x-2
  86. Calculus

    Find the limit lim tan^2(7x)/9x x-> 0
  87. Calculus

    Find dy/dx for y=3tan^-1(x/2). I know the answer is 6/x^2+4 but I'm stuck at y'=3(1/1+(x/2)^2)(1/2)
  88. Math/calculus

    Graph f (x) = 3cos (4pix -pi/2) -2
  89. Calculus help

    Lim(x>inf)=2000x^4/200x^4= 10
  90. Calculus -- Identity crisis

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

    what is average value of cos(x) on the interval [-3,5]?
  92. AP Calculus AB

    Hi. Please help me with the following question: lim x-->1 (x)/(ln(x))
  93. Calculus

    What is the area of the inner loop of r = 3+6sinΘ?
  94. Calculus

    Suppose y = sqrt(2x + 1), where x and y are functions of t. (a) If dx/dt = 15, find dy/dt when x = 4. dy/dt = ?
  95. Pre Calc

    From 2 points 400 yards apart on the bank of a straight river flowing due south, the bearings of a point on the opposite bank are 148 degrees and 28 degrees. How wide is the river? I am having a hard time understanding how this is set up. Help please?
  96. Pre-algebra

    I have some practice problems, and I need to have them worked out, showing your work. I will gain a better understanding of these problems by practicing them. Thank you. (6x+1)(x^2-9x+5) (2x^4+3)(4x^3+2) (12y^3+8y^2+20y)divided 2y (6x^2-25x-10) divided by (3x+2) (8x-5)+(7x+4...
  97. Pre-algebra

    I have some practice problems, and I need to have them worked out, showing your work. I will gain a better understanding of these problems by practicing them. Thank you. (6x+1)(x^2-9x+5) (2x^4+3)(4x^3+2) (12y^3+8y^2+20y)divided 2y (6x^2-25x-10) divided by (3x+2) (8x-5)+(7x+4...
  98. pre calc

    The following polynomial approximates the rabbit population in a particular area.? R(x)= -0.121x^5+2.952x^4+3500, where x is the number of years frm 1975. use a graphing calculator to describe the rabbit population from the rears 1975 to 1990. how do you get started with this ...
  99. Pre Algebra

    I have a rectangle that represents one whole. There are three sections that equal 1/3 each. I want to subdivide those sections into even & uneven squares. EX: 1/3 divided by 2 = 1/6 I am having trouble identifying the uneven squares. Could you please show me a few examples ...
  100. Math Pre- Algebra

    Linda reserved two hotel rooms for $75 each room plus a tax of $7.50. Illustrate the Distributive Property by writing two ways to compute the total. What is the total. So I need to get help on this answer stat. This is due tomorrow and I need done. Please and Thank you!!
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