(2x-1)e^2x的導數怎麼算出來~

(2x-1)e^2x的導數怎麼算出來~

((2x-1)e^2x)'=(2x-1)' * e^2x +(2x-1)*(e^2x)'
=2e^2x +(2x-1)*(e^2x *(2x)')
=2e^2x +(2x-1)*(e^2x * 2)
=(2 + 2 *(2x-1))* e^2x
=4x * e^2x