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fraction help - simplifying

please see attached. I;m struggling to see how these two are equal :colondollar:
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Original post by CasualSoul
please see attached. I;m struggling to see how these two are equal :colondollar:


You just divide e^2t from top and bottom
You are assuming the 1 in the 2 steps is the same one. It isn't.

Multiply the fraction by e2te2t\displaystyle \frac{e^{-2t}}{e^{-2t}}

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