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Mathematics
Mathematics
Problem
Compute
∫
0
∞
(
x
2
+
2
x
)
e
−
x
d
x
\displaystyle\int_{0}^{\infty} (x^{2}+2x) e^{-x}\,dx
∫
0
∞
(
x
2
+
2
x
)
e
−
x
d
x
. a)
3
3
3
b) The integral diverges c)
4
4
4
d)
5
5
5
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