化简 (9-p^2sin^2(y)(cos(2x)))p^2sin^2(y)

解答

化简

(9 - p^{2} sin^{2} (y) (cos (2 x))) p^{2} sin^{2} (y)

(9 - p^{2} sin^{2} (y) cos (2 x)) p^{2} sin^{2} (y)

求解步骤

(9 - p^{2} sin^{2} (y) (cos (2 x))) p^{2} sin^{2} (y)

使用法则:

(a) = a

(cos (2 x)) = cos (2 x)

= (9 - p^{2} sin^{2} (y) cos (2 x)) p^{2} sin^{2} (y)

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

s im pl i f y (- 1 + 42) \cdot 2

e x p an d (x^{4} - 2 x^{2} + 1) - (x - 2 x = 1)

e x p an d \frac{1}{( ( S + 1 ) ( S + 2 ) )}

e x p an d 1 - e^{x} \cdot (1 + e^{x})