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Mathematics
Mathematics
Problem
Evaluate
d
d
x
(
(
x
2
+
1
)
sin
x
x
3
)
∣
x
=
1
\left.\dfrac{d}{dx}\left(\dfrac{(x^{2}+1)\sin x}{x^{3}}\right)\right|_{x=1}
d
x
d
(
x
3
(
x
2
+
1
)
sin
x
)
x
=
1
.
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