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i have the following d.e.

y''+y=f(t); y(0)=0, y'(0)=1;

f(t)={ 1 , 0<=t < pi/2

{ 0, pi/2 <=t < infinity

so i solved the d.e.

and i got

Y(t) = 1+sin-cost-U_pi/2[1-sint]

i did all the work, i just don't know how to go about graphing the funciton..

any help would be appreciated.

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# Graphing a d.e. w/ a discountinous forcing function

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