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Mathematics
Mathematics
Problem
Derive an expression for
d
d
x
[
x
sin
x
1
+
cos
x
]
\dfrac{d}{dx}\left[\dfrac{x\sin x}{1+\cos x}\right]
d
x
d
[
1
+
cos
x
x
sin
x
]
and simplify so that your final answer contains no quotients.
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