Question

求导,f(x)=x/e的2x次方—C

Answer 1

f(x) = x / e^(2x) - C

= x e^-(2x) - C

f'(x) = e^-(2x) + x e^-(2x) (- 2)

= 1 / e^(2x) - 2x / e^(2x)

= (1 - 2x) / e^(2x)