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# The indefinite integral of the function $$f\left(x\right)=x\cos x$$ for any cons...

### Question

The indefinite integral of the function $$f\left(x\right)=x\cos x$$ for any constant $$k$$, is

### Options

A) $$-x\cos x+\sin x+k$$

B) $$x\sin x-\cos x$$

C) $$x\sin x+\cos x+k$$

D) $$x+\sin x+\cos x+k$$