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Input:
factor(sin(x)*cos(x))
Write:
`factor(sin(x)*cos(x))`
Compute:
$$factor :\\ \ cos(x)\ sin(x)$$
Output:
$$factor :\\ \ cos(x)\ sin(x)== \frac{1}{2}\ sin(2\ x)$$ Result: $$\frac{1}{2}\ sin(2\ x)$$
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