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

I'm reading a book where they do the following steps which I don't understand:

We have a DE:

b^2 * y'' = axy

put t = b^(-2/3) a ^(1/3) x

then somehow get (d^2 y)/dt^2 = ty

how?

2. Relevant equations

None.

3. The attempt at a solution

I tried messing with chain rule but got nowhere.

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# Homework Help: Substitution question

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