I know that $\delta(f(x))=\sum_i\frac{\delta(x-x_i)}{f'(x_i)}$. What will be the expression if $f$ is a function of two variables, i.e. $\delta(f(x,y))$?
2026-03-30 05:31:55.1774848715
How to write $\delta(f(x,y))$ in terms of $\delta$ function?
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