- #1

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## Homework Statement

Hello,

I am in differential equations currently and I have a homework question regarding simplifying

sin( Pi t)/4

into

.5 * i E^(-.25 i pi t) - .5 * i E^(.25 i pi t)

## Homework Equations

I think they might be using Euler's Identity, but I am unsure.

E^(a + ib)t = E^(at) (cos[bt] + i sin[bt])