Question

f(x)= sqrt2x, then f'(2)=

Answer 1

first rewrite the expression
f(x) = (2x)^(1/2)

Answer 2

Find the derivative then plug in 2.

Answer 3

Yeah go perl!

Answer 4

now use the chain rule

Answer 5

f ' (x) = 1/2 * (2x)^(-1/2) * 2