(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Show that y(t) = e^t is a solution of y'' - y = 0,

2. Relevant equations

integral of e^x dx = e^x +c

derivative of e^x = e^x

3. The attempt at a solution

set m = d(e^t)/dt, which also = e^t then dm = e^t

then d(m)/dt = e^t if y(t) = e^t is a solution

integrate both sides m= e^t +c

substitute e^t = e^t + c which is true for C = 0

not sure if it is that simple

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# Homework Help: Second derivative of e^x minus e^x

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