展开 (2sin(θ)(sin(θ)+1))/(1+sin(θ)+cos(θ))

解答

展开

\frac{2 sin ( θ ) ( sin ( θ ) + 1 )}{1 + sin ( θ ) + cos ( θ )}

\frac{2 sin ^{2} ( θ ) + 2 sin ( θ )}{1 + sin ( θ ) + cos ( θ )}

求解步骤

\frac{2 sin ( θ ) ( sin ( θ ) + 1 )}{1 + sin ( θ ) + cos ( θ )}

乘开

2 sin (θ) (sin (θ) + 1) : 2 sin^{2} (θ) + 2 sin (θ)

= \frac{2 sin ^{2} ( θ ) + 2 sin ( θ )}{1 + sin ( θ ) + cos ( θ )}

e x p an d \frac{3 ( 12 n ^{2} + 15 n + 3 )}{2 n ^{2}}

e x p an d \frac{- 22 s - 8}{( s + 4 ) ( s ^{2} + 4 )}

s im pl i f y 2 (x + 3 - (1 + x) 5 + 4 x - 1 + x)

s im pl i f y (2 x^{3} + 6 x + 1)^{2}

e x p an d \frac{2 s}{( s - 1 ) ( s ^{2} + 4 )}