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May 18, 2013

# Homework Help: Calculus :)

Posted by Brit on Wednesday, August 24, 2011 at 3:31am.

For the function f(x)=1/(x+1), verify f(x) is one-to-one, then calculate f^-1 (1/4) and (f^-1)' (1/4)

• Calculus :) - bobpursley, Wednesday, August 24, 2011 at 9:13am

the inverse

y=1/(x+1)
x=1/(y+1)
y=1/x -1

y(1/4)=3

y'=-1/x^2
y'(1/4)=-16

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