展开 derivative of 3xcos(2x)+(3x^2-5)sin(2x)

解答

展开

\frac{d}{d x} (3 x cos (2 x)) + (3 x^{2} - 5) sin (2 x)

\frac{d}{d x} (3 x cos (2 x)) + 3 x^{2} sin (2 x) - 5 sin (2 x)

求解步骤

\frac{d}{d x} (3 x cos (2 x)) + (3 x^{2} - 5) sin (2 x)

= \frac{d}{d x} (3 x cos (2 x)) + sin (2 x) (3 x^{2} - 5)

乘开

sin (2 x) (3 x^{2} - 5) : 3 x^{2} sin (2 x) - 5 sin (2 x)

= \frac{d}{d x} (3 x cos (2 x)) + 3 x^{2} sin (2 x) - 5 sin (2 x)

e x p an d A (- 4, - 2) y B (5, 3)

e x p an d \frac{4 m n ^{2} + p n ^{2}}{32 km + 8 k p}

e x p an d \frac{( 4 + x ^{2} ) ^{2}}{2}

e x p an d \frac{3 s ^{2} + s - 23}{( s + 3 ) ( 3 s - 2 ) ( s - 1 )}

e x p an d \frac{( x ^{3} + 2 ) ^{3}}{2 + C}