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geerky42 (geerky42):
\[\Large \int x^3 e^{-x}dx \space = \space ?\]
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OpenStudy (anonymous):
Integrate by parts u=polynomial dv=exponential Repeat several times on the resulting integral from parts
geerky42 (geerky42):
I got \(\large\displaystyle -x^3e^{-x} - 3x^2e^{-x} - 6xe^{-x} - 6e^{-x} + C\) Am I correct?
OpenStudy (anonymous):
Yup. Nice job
geerky42 (geerky42):
wow, that's long.
OpenStudy (raden):
use the table integral : |dw:1361660448505:dw|
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