Question: t 2 y'' + ty' - y = 0 We will assume t > 0. 1a) define t = t(x) = e x , considering

t2y'' + ty' - y = 0

We will assume t > 0.

1a) define t = t(x) = ex, considering x a new variable. Verify that

dxdy=y(ex)ex

dx2d2y=y(ex)e2x+y(ex)ex

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