indefinite-integration

Question: $\int{\left( {{\sin }^{4}}x-{{\cos }^{4}}x \right)\,dx=}$

1) $-\frac{\cos 2x}{2}+c$

2) $-\frac{\sin 2x}{2}+c$

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

4) $\frac{\cos 2x}{2}+c$

Solution:

Explanation: No Explanation

Fundamental integration

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