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April 19, 2014

Homework Help: Calculus 1, Help!

Posted by Callie on Wednesday, August 17, 2011 at 9:50pm.

The rate of transmission r in a telephone cable is obseed to be approximately r(x)=x^2*ln(1/x, where x is the ratio of the radius of the core to the thickness of the insulation. Due to manufacturing constraints, the only possible ratios are 1/4<=x<=1. What value of x gves the maximum rate of transmission?

No idea where to even start! Any help at all is appreciated! Thanks so much!

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