Integration/Function with positive derivative/Extrema of partial areas/Exercise
![](http://upload.wikimedia.org/wikipedia/commons/b/b9/Funktion.Flaechenvariation.png)
Let
be a differentiable function with for all . For what points does the area of the hatched surface have a local extremum?
Is it a minimum or a maximum?Let
be a
differentiable function
with
for all
.
For what points
does the area of the hatched surface have a
local extremum?