Application of maxima and minima

**jam2011** · March 2nd 2011, 06:03 PM

Is my illustration correct? How do I start this problem? What formula do I need to use? Please consider to answer this problem because I don’t know how to start .

**FernandoRevilla** · March 3rd 2011, 07:16 AM

Suppose the corner is at $(0,0)$ and the end points of the log $P,Q$ are in the lines $y=8$ and $x=4$ . Consider the family of lines $y=mx$ passing through $(0,0)$ . Find the points $P,Q$ and the minimum of $f(m)=d(P,Q)$ .

**jam2011** · March 6th 2011, 10:21 PM

please help me to continue solving this because I'm stuck her. I'm also confused in solving derivatives .thanks in advance....

**vldo** · March 7th 2011, 05:15 PM

Find the derivative of L(x)

**rcs** · March 7th 2011, 05:43 PM

i think we have to simplify first the radicand before taking the derivative

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