Application of maxima and minima

• March 2nd 2011, 06:03 PM
jam2011
Application of maxima and minima
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 .
• March 3rd 2011, 07:16 AM
FernandoRevilla
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 $f(m)=d(P,Q)$.
• March 6th 2011, 10:21 PM
jam2011
please help me to continue solving this because I'm stuck her. I'm also confused in solving derivatives .thanks in advance....
• March 7th 2011, 05:15 PM
vldo
Find the derivative of L(x)
• March 7th 2011, 05:43 PM
rcs
i think we have to simplify first the radicand before taking the derivative