Pre- Calculus

21,894 results, page 94
  1. calculus

    finding limit using epsilon and delta of lim x->2 x^3-3x+7=9..plz anyone solve it for me....
  2. Calculus

    Use the substitution x=3tan() to evaluate the indefinite integral 93dx/(x^2sprt(x^2+9))
  3. calculus

    If x^2 + y^2 = 100 and dy/dt = 6, find dx/dt when y = 8. (Enter your answers as a comma-separated list.)
  4. calculus

    f(x)= -7(cos(s^3))(tan(s^2)), find f'(x). I got 21s^2cos(s^3) x 2s(sec^2(s^2)) but it is wrong...
  5. Grade 12 AP calculus

    You are using Newton's method to solve x3-5x-2=0. If your first guess is x1=2, what value will you calculate for the next approximation x2?
  6. Calculus

    If 3(a,3,2)-2(3,b,b)=(-3,1,-2) determine a and b. Describe the set spanned by the vectors. I don't know how to answer this
  7. Calculus

    Integrate sqrt(x^2 + x) dx I have completed the squares and got x^2-x = (x+1/2)^2 -1/4 Now i don't know how to proceed, plz help me!
  8. calculus

    Find the value of x where Y= 5^2x * e^(3x^2) has a horizontal tangent. Is this point a Max, Min or plateau?
  9. Calculus 2

    Does Series n=1 to infinity 1/2n+1 converge or diverge? I'm thinking it converges, because p would be < 1 right? I'm a little confused.
  10. calculus

    If f(2)=-3, g(x)=f^-1(x), what is the equation of the tangent line to g(x) at x=-3? I don't know how to find g(x), if you can help me with that, then I think I can do the rest of the problem
  11. Calculus - Special sum formulas

    Find the formula of n Σ (j+3)(j-4) j=1 I have gotten to n(n+1)(2n+1)/6 - n(n+1)/2 - 12n How do I simplify it from there?
  12. Math Calculus

    Find critical points and extreme values on the interval [-1,5]: f(x)=|x^2-4x+3|
  13. calculus - identities

    prove this identity: sec(y) - cos(y)= tan(y)sin(y) THANK YOU!!
  14. calculus

    Find any critical numbers of the function h(x)=sin^2(x)+cos(x) 0 < x < 2π
  15. Calculus

    Find an equation of the tangent line to the given curve at the specified point: y=sqrt(x)/x+1, (4,2/5)
  16. Calculus II

    find the distance between the given parallel planes 5x-5y+z=10 and 10x-10y+2z=2. I got 9sqrt51/51
  17. Calculus

    10) Evaluate the integral by making the given substitution. ∫sec(5x)tan(5x)dx u=5x
  18. Calculus

    How would I go about finding the limit of this sequence: (e^(2n)+6n)^(1/n) Please explain the steps, it'd be super helpful! Thanks!
  19. Calculus

    Write an expression for y = f(x) by solving the differential equation dy/dx = x√y with the initial condition f(3) = 25. I got y = (x^2/4 + 11/4)^2.
  20. Calculus

    for a normal curve what percentage of values falls beyond two standard deviations from the mean
  21. calculus

    Find a formula for a function that has vertical asymptotes at x=7 and x=9 and a horizontal asymptote at y=7
  22. Calculus

    Approximate the sum of the series correct to four decimal places. n=1 to infinity (-1)^n/4^n*n!
  23. calculus

    Find the points on the curve y=(cosx)/(2+sinx) at which the tangent is horizontal.
  24. Calculus 1 Integration Trig Inverse

    integral of (4/(x times the square root of (x^2-1)) + (1+x+x^3)/(1+x^2)dx
  25. Calculus

    The integral from 1 to 5 of 1/x^2*(times) the square root of 1+(1/x)dx. i've had tried this problem over and over again and cannot get the correct answer. Please help. thanks
  26. Calculus

    What are the x-coordinates of the points of inflection for the graph of f(x)sin^2x on the closed interval [0,pi]?
  27. calculus

    I am having trouble with this problem also derivative differentiate f(x)=(3-x)^4(x+5)^3 so far I have 4(3-x(x+5)^3+3(x+5)(3-x) Not quite right. Treat it as d/dx[u(x) + v(x)] = u dv/dx + v du/dx u(x) = (3-x)^4 v(x) = (x+5)^3 du/dx = -4(3-x))^3 (using the
  28. calculus

    Find the domain for the particular solution to the differential equation dx/dy=1/2x, with initial condition y(1) = 1.
  29. Calculus

    Solve the equation (3^x)^2-12*3^x+27=0 Simplify and write without negative exponents: 3^2(x^-2y^3)^3/4^1/2*x^-4cuberooty^2
  30. Calculus

    Find the equation of the tangent line to the curve y=2tan(x) at the point (pi/4,2).
  31. calculus

    Find the exact area of the region bounded by the -axis and the graph of (x^3)-x
  32. Calculus

    If f(x) = (cos x)(esin x ), then, correct to the nearest hundredth, f '(2.0) = The answers suppose to be 0.86 but i always get -1.83
  33. Calculus

    Prove the identity and give its domain. 4sinxcosx+sin4x=8sinxcos^3x
  34. Calculus

    How do you find the original function given the equation of a tangent line and two points?
  35. calculus

    Find the exact values of x if 0<=x<=pi and 2sin^2(x)-sinx-2sinxcosx+cosx=0
  36. Calculus

    I'm having trouble with this one. Problem: Find the equations for the planes parallel to x+2y-2z=1 and two units away from it.
  37. Calculus

    Find the equation of the line that is tangent to the curve x(t) = t^2+1 and y(t)=t^3-1 at the point (5,7). I get a slope of 7.5.
  38. Calculus

    Use L'Hoplital's rule to find the limit. Lim x->0 (3-3cos(x))/(sin(4x))
  39. calculus

    dont get it write intervals for the function sin(x)/1-cos (x) is continuous on.
  40. Calculus III

    Derivative of Inverse Trigonometric Functions f(x) = sin(arccos(4x)) What is f'(x)?
  41. Calculus

    Write a vector equation AND parametric equations of the line through the points A(6,-1,5) and B(-2,-3,6)
  42. Calculus

    If b is a positive constant, find the average value of the function f defined by f(x) = x2 + bx + 1 on the interval [-1,1]
  43. calculus

    If a store credit account charges 1.2% interest each month, what is the APR?
  44. Calculus

    Find the derivative of the function y defined implicitly in terms of x. y = √(xy+ 9)
  45. Calculus

    Find the derivative of the function y defined implicitly in terms of x. y = sqrt(xy + 9) Please help! Thanks! :)
  46. Calculus

    Consider the function y=7+5cos(8x) What is the amplitude? What is the period? What is the largest value the graph takes?
  47. calculus

    the tangent to the curve y=a/x +bx at (1,3) is parallel to the line whose equation is y=2x+1. find the values of a and b.

    Find and classify all locsl extreme values of each given function.(no decimals) (a) g(x)=e^(2x)+e^(-x) (b) g(x)=x^(2/3)*(x^(2)-4)
  49. elements of calculus

    write the equation of the line tangent to the curve y= 3x^3- 2x at the point where x=2
  50. Calculus

    Find if the limit exists. lim tan(x)/x x->0 Please show how you determined this. Thanks!
  51. calculus

    find the area the region bounded by the graphs of the given equation y=81x,y=x^5,x=0,x=3
  52. Calculus

    Find the equation of the tangent line to the curve (a lemniscate) 2(x^2+y^2)^2 = 25(x^2-y^2) at the point ( -3 , -1 )
  53. Calculus

    First make a substitution and then use integration by parts to evaluate. The integral of (x)(ln(x+3))dx What do you substitute first?
  54. Calculus

    Find the length of the parabola y^2=4ax cut off the line x=a about the x-axis
  55. calculus

    Evaluate the integral. Express your answer using words or symbols. ç(-2sin x) dx
  56. Calculus

    Ba has a half-life of 283.2 hours. How long would it take for the 50 mg of Ba in a sample to decay to 1.0 mg?
  57. Calculus

    Show that volume of the solid generated by revolving y=1/x between x=1,2x=infinity about x-axis

    Find the relative extrema of function. f(x,y)=x2+3xy+y2-10x-20y+12
  59. Calculus 1

    Find an equation of the tangent line to the curve y = 6/(1+e^−x)at the point (0,3).
  60. Calculus

    Approximate the sum of the series correct to four decimal places. n=1 to infinity (-1)^n/4^n*n!
  61. Calculus

    If y=3x-7, x is greater than 0, what is the minimum product of x^2y? A. -5.646 B. 0 C. 1.556 D. 2.813 E. 4.841
  62. Calculus

    Find the area of the region between the curves y=8−x^2 y=x^2 x=−3 and x=3 I made a slight correction
  63. calculus

    Find the second derivative of the volume of a cube with respect to the length of a side
  64. Calculus

    For approximately what values of x can sinx be replaced by x - x^3/6, with an error of magnitude no greater than 8 * 10^-3?

    Find the gradient and directional derivative of f at P in the direction of v: f(x,y)=ln(x^2 + y^2 +1)+ e^(2xy) P(0,2) v=5i-12j
  66. calculus

    find if the series is convergent and what it sums to the sum from k=3 to infinity of (k+1)^2/((k-1)(K-2)) I'm not sure how to start
  67. Calculus 1

    Evaluate the difference quotient for the given function. Simplify your answer. f(x) = 1+2x− x^2, (f(4+h)-f(4))/h
  68. calculus

    find the average value of the function f(x,y)=xe^y over the plane region R is the triangle with vertices (0,0), (1,0) and (1,1)
  69. math

    Use part I of the Fundamental Theorem of Calculus to find the derivative of g(x)= integrate from 9x to 4x of ((u+4)/(u-1))du
  70. calculus honor

    If y = 2x3 – 4x and , find when x = 1. Give only the numerical answer. For example, if = 3, type only 3.
  71. calculus

    Find the volume of the solid formed by revolving the region bounded by y=1-x, y=x-4, x=0 about x=7
  72. calculus

    What is an upper bound on the absolute value of the error: |sum from n=1 to infinity of ((-1)^(n+1))/(n*5^n)) -.1826666...| ?????
  73. Integral Calculus

    Find Mx, My, and (x, y) for the lamina of uniform density ρ bounded by y=1/2x ,y>0 x=2
  74. Calculus

    State the domain and range of the function f(x) = 2sin(sqrt(3x-1)) + 3 Why is this so difficult?
  75. calculus

    find the average value of the function f(x,y)=xe^y over the plane region R is the triangle with vertices (0,0), (1,0) and (1,1)
  76. Hard Calculus

    f(x)= xsquared - 2x Determine whether y= f(IxI) is continous at x= 0 justify your answer
  77. Calculus

    Mt+1= 0.75Mt+2 give the solutions of the dynamical system with Mo=5 i.e determine Mt as a function of t
  78. Calculus

    Find the area between the two curves y1= x^2 - 4x + 5 and y2 = 2x - 3, finding the points of intersection algebraically.
  79. Calculus

    Could anyone please help me figure out the discontinuity that is removable of the following function?? Any help would be greatly appreciated! Thanks in advance!!! f(x)=4x/x^2+x-2
  80. calculus

    find the volume of the solid bounded above by the surface z=f(x,y) and below by the plane region R f(x,y)= 4-2x-y; R{(x,y)0<x<1;0<y<2
  81. College Calculus

    What is the integral of cos^6x? I tried half angle identities but it didn't really help...
  82. Calculus check

    Find the equation of the line tangent to y=tan2x at x=pi/8 A. y-1=sqrt(2)(x-pi/8) B. y-1=1/2(x-pi/8) C. y-1=1/4(x-pi/8) D. y-1=2(x-pi/8) E. y-1=4(x-pi/8) I got A
  83. Calculus

    Determine if the planes in each pair are parallel and distinct or coincident. a) 5x - 2y + 4z = 7 5x - 2y + 4z = -3 b) 7x - 3y - z = 9 21x - 9y - 3z = 27
  84. Calculus

    Find any relative max or min points of the given function y=3x^2+12x+17 So far, I have: y'=6x+12=0 2(3x+6)=0 x=-2
  85. calculus

    let f(x)=0.5x^3-4x^2-2x+5.a.use n deriv to graph f(x),f'(x),f"(X)on the window xmin = -5,xmax=10,ymin= -50,ymax= 10
  86. Calculus

    Find the equation of the line tangent to the given curve with the given slope y=(1/3)x^3+2x^2+5, m=-4 I'm stuck. So far, I have: y'=x^2+4x x^2+4x=-4
  87. Calculus

    the points a, b, c, d, e, f, g are equally spaced along a line. Name a vestor which is equal to 3BD
  88. calculus

    Find the equations for the lines tangent to the ellipse 4x^2+y^2=72 that are perpendicular to the line x+2y+3=0
  89. calculus

    Find the volume of the solid obtained by revolving the graph of y=7x*(4-x^2)^(1/2) over [0,2] about the y-axis
  90. calculus

    What is the limit, as x approaches 1, of (sqrt(x) - 1)/(x - 1)? I need to show work, but I know the answer is 3/2, because I confirmed with a TI-89.
  91. Calculus

    Find an equation for the tangent line of the function f(x)=6+10xe^x at the point (0,6).
  92. Calculus

    find the derivative of f(x)=((x^2+3)^5+x)^2 using the chain rule. I know that I would start with f'(x)=2((x^2+3)^5+x) but I don't know how to do the rest
  93. Calculus grade 12 lines and planes

    Find the value of k so that the line [x,y,z] = [2,-2,0]+ t[2,k,-3] is parallel to the plane kx +2y - 4z= 12
  94. Calculus I

    Section is Integration by Substitution: Evaluate the indicated integral. x^2 sec^2 x^3dx
  95. calculus

    find equations of the tangent lines to the curve y=(x-48)/(x+48) that are parallel to the line y=6x+6
  96. Calculus

    If position is given by p(t)=t^2 +1, find the velocity v(t) at t = 2. I'm completely lost as to where to even start with this problem.
  97. Calculus

    Let f(x,y)=sqrt(1-x^2) and R be the triangular region with corners (0,0), (1,0), and (1,1). Evaluate the double integral(R) f(x,y)dA.
  98. Calculus

    Consider the vector field: F(x,y)=2xyi+x^(2)j Integrate F over a path starting at (0,0) and ending at (2,2).
  99. Calculus

    Graph the integrands and use areas to evaluate integrals (integrate(3&-3)) root(9-x^2) dx
  100. physics

    what is the displacement of the ball? i.imgur. com/8ljWh . png i don't know calculus!