math/ calculus

posted by .

full work out with explanation of this problem please we're working with derivatives and i don't understand it

given h(x)= cotx/x find h'(pi/2)

  • math/ calculus -

    h = f/g so
    h' = (f'g - fg')/g^2

    h'(x) = [-x csc^2(x) + cot(x)]/x^2

    h'(pi/2) = [-pi/2 * 1 + 0]/(pi^2 / 4)
    = - 2/pi

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. calculus

    from the equation: x^4 - i = 0 x^4 = i how do you get: The solutions are the fourth roots of i = cos(pi/2) + isin(pi/2) I don't understand how you get pi/2?
  2. Math- Still Don't Understand!

    I do not understand how to work this problem out. I have a series of other questions that are similar, and it would really help me out if someone could help me understand how to work this problem. At the first tri-city meeting, there …
  3. math question

    I am trying to study for a basic math entrance exam and can not recall how to work out the following question. Here it is: Three people who work full time are to work together on a project,but their total time on the project is to …
  4. Calculus

    Hi~ Thank you for your help! I was trying to work on a problem about Taylor series, but i don't think im approaching the problem the right way. I have to find the fifth order Taylor polynomial and Taylor series for the function f(x) …
  5. calculus

    Quadratic function written in standard form where a, b, and c are constants such that a is not zero. f(x)= ax^2+bx+c Using calculus find the vertex of the parabola formed by this quadratic function. Determine under what conditions …
  6. Derivatives

    Find the derivatives of: 1. H(x)= sin2xcos2x The answer given is 2cos4x. My question is, how in the world did they get that!?
  7. Calculus

    A curve is defined by the parametric equations: x = t2 – t and y = t3 – 3t Find the coordinates of the point(s) on the curve for which the normal to the curve is parallel to the y-axis. You must use calculus and clearly show your …
  8. Calculus

    Hello, I really need help on these two homework problem. >< In problem #1, I believe it is related to the exponential functions and their derivatives Calculus II?
  9. math

    Given that a:b = 8:5 and b:c= 3:4 find the ratio a:b:c Give your answer in its simplest form. Show all working out. My work: 1) 5 and 3 both equal to b. 2) 8+5=13/2= 11.5 3)3+4=7/2=3.5 4)11.5+3.5= 15 All my working shown I dont understand …
  10. math

    Find the derivatives of the following functions. 1.F (x)cotx 2.f (x)=sin (x2+2)

More Similar Questions