Solve for f
\left\{\begin{matrix}f=\frac{\left(\sin(x)\right)^{2}}{xE^{x}}\text{, }&x\neq 0\text{ and }\left(E>0\text{ or }Denominator(x)\text{bmod}2=1\right)\text{ and }E\neq 0\\f\in \mathrm{R}\text{, }&\exists n_{1}\in \mathrm{Z}\text{ : }x=\pi n_{1}\text{, }n_{1}=0\end{matrix}\right.
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xE^{x}f=x\sin(2x)
The equation is in standard form.
\frac{xE^{x}f}{xE^{x}}=\frac{x\sin(2x)}{xE^{x}}
Divide both sides by E^{x}x.
f=\frac{x\sin(2x)}{xE^{x}}
Dividing by E^{x}x undoes the multiplication by E^{x}x.
f=\frac{\sin(2x)}{E^{x}}
Divide \sin(2x)x by E^{x}x.
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