| Author |
Comment/Response |
paul
|
 05/29/12 09:41am
Hi
I have differential equation
y''[t] +y[t]==DiracDelta[t-Pi]-DiracDelta[t-2Pi]
and
y[t_] :=Sin[t-Pi]HeavisideTheta[-\[Pi]+t] -Sin[t-2Pi]HeavisideTheta[-2\[Pi]+t]+Sin[t]
should be a solution
but
FullSimplify[y''[t] +y[t]==DiracDelta[t-Pi]-DiracDelta[t-2Pi]]
Returns
DiracDelta[\[Pi] - t] -
DiracDelta[-2 \[Pi] + t] == -DiracDelta[-2 \[Pi] + t] +
DiracDelta[-\[Pi] + t]
when I expect
True
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