- #1

abrowaqas

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## Homework Statement

Solve the following differential equation

y'''-3y''+2y' = e^x/(1+e^(-x))

## Homework Equations

## The Attempt at a Solution

first i find the complementary function i-e

Yc= C1 e^x + C2 e^(1+√3)x + C3 (1-√3)x

now i started to find particular integral by

Yp = 1/f(D) e^x/(1+e^(-x))

= e^x 1/f(D+1) 1 /(1+e^(-x))

= e^x 1/f(D+1) e^x/e^x+1

i am stuch here... how i may go now..

can anybody tell me how i find Particular Integral of this question?