Posted by **Z32** on Tuesday, April 13, 2010 at 10:03pm.

Determine the y-coordinate of the critical point for the function where 0<x<5?

I got the derivative which is -1/x^2 + 1/(5-x)^2 but I don't know how to get the answer. The answer is y=4/5 but I was wondering how do you get that?

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