Evaluate the limit $\lim_{x\to\infty }\left(2x^3e^{-x^2}\right)$ by replacing all occurrences of $x$ by $\infty $
Infinity to the power of any positive number is equal to infinity, so $\infty ^2=\infty$
Apply the formula: $n^{- \infty }$$=0$, where $n=e$
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