Differentiation problem and finding maximum, ing ?

[JakePearson]

Differentiation problem and finding maximum, need helping :)?

have a few problems with these questions, can you help :)

Using differentiation, find the MAXIMUM value of the following functions?

1. f(x) = x² / 4 + 4 / x
2. f(x) = xe^-2x2
3. f(x) = sqrt(x - n) / x ; n>0

hope you guys can help !

 

[berkeman]

have a few problems with these questions, can you help :)

Using differentiation, find the MAXIMUM value of the following functions?

1. f(x) = x² / 4 + 4 / x
2. f(x) = xe^-2x2
3. f(x) = sqrt(x - n) / x ; n>0

hope you guys can help !

We can help, but only after you show us how you would approach them. How do you find the min and max of functions?