Post a New Question

calculus help please

posted by .

Consider the function f(x)=2x+9x^–1.?
For this function there are four important intervals: (-inf,–A], [A,B),(B,C), and [C,inf)

where A, and C are the critical numbers and the function is not defined at B.

Find A= ?????
and B= 0
and C =?????

  • calculus help please -

    i have this one already

  • calculus help please -

    In that case I will assume that you no longer need help.

    Since f(x) = 2x + 9/x
    f'(x) = 2 - 9/x^2
    The function has extreme values at
    x = 3/sqrt2 and = -3/sqrt2
    Those are the points A and C.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

More Related Questions

Post a New Question