### Author Topic: Complete the square  (Read 647 times)

#### Jingxuan Zhang

• Elder Member
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##### Complete the square
« on: February 14, 2018, 05:59:39 AM »
in a heat equation question when the initial distribution is given of the form $e^{-ax^2}$, how am I supposed to complete the square? or do I use any alternative?
I don't think if I end up having $\sqrt{1+4kt}y$ terms it will bring any help, while there are still others that cannot be factored out at once.

#### Victor Ivrii

Easy. You need to complete it with respect to $y$ only