Tìm nguyên hàm của hàm số f(x) = 2sinx + 3x.

A. F(x) = sinx + cosx + C;

B. F(x) = sinx – cosx + C;

C. F(x) = −sinx + cosx + C;

D. F(x) = −sinx – cosx + C.

A. \(\int {f\left( x \right)dx} = x - \cos x + C\);

B. \(\int {f\left( x \right)dx} = x + \sin x + C\);

C. \(\int {f\left( x \right)dx} = x + \cos x + C\);

D. \(\int {f\left( x \right)dx} = \cos x + C\).

A. sinx + 3x² + C;

B. −sinx + 3x² + C;

C. sinx + 6x² + C;

D. −sinx + C.

A. \(\int {\cos \frac{x}{2}\sin \frac{x}{2}dx} = \frac{1}{2}\sin x + C\);

B. \(\int {\cos \frac{x}{2}\sin \frac{x}{2}dx} = \frac{1}{2}\cos x + C\);

C. \(\int {\cos \frac{x}{2}\sin \frac{x}{2}dx} = - \frac{1}{2}\sin x + C\);

D. \(\int {\cos \frac{x}{2}\sin \frac{x}{2}dx} = - \frac{1}{2}\cos x + C\).

A. \(\int {f\left( x \right)dx} = 2\sin \left[ {2\left( {x + \pi } \right)} \right] - {x^3} + C\);

B. \(\int {f\left( x \right)dx} = \sin 2x - {x^3} + C\);

C. \(\int {f\left( x \right)dx} = - \sin \left[ {2\left( {x + \pi } \right)} \right] - {x^3} + C\);

D. \(\int {f\left( x \right)dx} = - 4\sin \left[ {2\left( {x + \pi } \right)} \right] - 6x + C\).

A. \(\int {f\left( x \right)dx} = \frac{{4{{\sin }^3}x}}{3} + C\);

B. \(\int {f\left( x \right)dx} = 2x - \sin 2x + C\);

C. \(\int {f\left( x \right)dx} = \frac{{\cos 2x}}{2} + C\);

D. \(\int {f\left( x \right)dx} = 2x - 2\sin 2x + C\).