indefinite-integration

Question: $\int_{{}}^{{}}{{{\sin }^{3}}x\ .\ \cos x\ dx=}$

1) $\frac{{{\sin }^{4}}x{{\cos }^{2}}x}{8}+c$

2) $\frac{{{\sin }^{4}}x}{4}+c$

3) $\frac{{{\sin }^{2}}x}{2}+c$

4) $4{{\sin }^{4}}x+c$

Solution:

Explanation: No Explanation

Integration by substitution

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