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Mathematics
Mathematics
Problem
Determine
lim
x
→
∞
e
−
5
x
(
x
3
+
2
x
)
cos
x
\displaystyle\lim_{x\to\infty} e^{-5x}(x^3+2x)\cos x
x
→
∞
lim
e
−
5
x
(
x
3
+
2
x
)
cos
x
. a)
∞
\infty
∞
b) Does not exist c)
6
125
\displaystyle\tfrac{6}{125}
125
6
d) 0
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