find the absolute maximum and absolute minimum (if any) for the given function :
f(x)= 2x + 32/x ; when x > 0
I tried to solve it but I'm not sure if its a maxima or minima, here are my try :
f(x)= 2x + 32/x
f'(x)= 2-32/x^2
2-32/x^2=0
2u^2=32
u^2=16
u=4 or - 4
-4 is not included...
Homework Statement
I have a homework that i couldn't do :( can you explain it to me please ?
the problem is :
find all values of x=c so that the tangent line to the graph of f(x) af (c , f(c)) will be horizontal
http://img13.imageshack.us/img13/4222/scan0002izs.jpg [Broken]
The...