Stupid math tricks

(a.k.a. mathematical methods you were never taught)

Find below collected wisdom from 4+2 years of attempting problem sets.

\[\int \delta({g(\vec{x})}) d\vec{x} = \Sigma_{\text{zeros of} g(\vec{x})} \frac{1}{|\nabla g(\vec{x})|}\] Plug this into your integrand and simplify before evaluating.

Joel C Zinn7 months ago · Publicthis is a comment