Question

find the coefficient of x^n in the expansion of e^-2x​

Answer 1

Answer:

Given, e ^2x+3 =e ^ 2x e ^3

=e ^3(1+2x+ (2x)^2 /2! +...∞)

Hence the general term will be

(2x) ^n e ^3 / n!

I hope this answer help you.