展开 sin((9x^5+cos(x))^2)

解答

展开

sin ((9 x^{5} + cos (x))^{2})

sin (81 x^{10} + 18 x^{5} cos (x) + cos^{2} (x))

求解步骤

sin ((9 x^{5} + cos (x))^{2})

(9 x^{5} + cos (x))^{2} = 81 x^{10} + 18 x^{5} cos (x) + cos^{2} (x)

= sin (81 x^{10} + 18 x^{5} cos (x) + cos^{2} (x))

e x p an d \frac{( x ^{3} + y x ^{2} - ( y + 5 ) x - 19 )}{( x + 3 )}

e x p an d (π (2 - 1)) - 2

e x p an d e^{x} cos (2 x) \cdot (e^{x} sin (2 x) + 2 e^{x} cos (2 x))

s im pl i f y cos (x) \cdot δ (x - 3 π)

e x p an d \frac{p ( 1 + r ) + b ( 1 + f )}{q ( p + b )}