Question

Could someone help me to understand the first step that Wolfram Alpha takes in its solution at https://i.imgur.com/NUGVj2f.png ? I think that the 1/4 comes from rewriting the problem without the whole thing over 2, but how does it get there?

Answer 1

forget wolfram , just square the damn thing and integrate term by term

Answer 2

Yep, Got it. Thanks. The semester has just begun and I didn't practice or study one bit over the summer.

Answer 3

oh i see
it is just algebtra
\[\left(\frac{3-y}{2}\right)^2=\frac{1}{4}(3-y)^2\]