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## Homework Statement

if given the general solution to a differential equation

y(t)=a cos t + b sin t + ((cos wt)/1-w^2),

Find out how long it takes the solution to approach the steady state solution.

original second order differential equation:

y'' + y = cos wt such that 0 < w < 10

## Homework Equations

## The Attempt at a Solution

I am not sure where to begin.