deletions | additions       diff --git a/Integrals_Multivariate_delta_functions_int__.tex b/Integrals_Multivariate_delta_functions_int__.tex  index ecacc69..abad981 100644  --- a/Integrals_Multivariate_delta_functions_int__.tex  +++ b/Integrals_Multivariate_delta_functions_int__.tex 
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Integrals  Multivariate delta functions  \[  \int \delta({g(\vec{x})}) = \Sigma_{zeros \Sigma_{\text{zeros  of g\vec{x}} \frac{\vec{x}}{|\Delta g\vec{x}}} \frac{1}{|\Delta  g(\vec{x})|} \]  Plug this into your integrand and simplify before evaluating.