展开 (cos(θ)(1+sin(θ)))/(1+sin^2(θ))

解答

展开

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

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

求解步骤

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

乘开

cos (θ) (1 + sin (θ)) : cos (θ) + cos (θ) sin (θ)

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

e x p an d - \frac{( x + 6 ) ^{2}}{4}

e x p an d (x^{2} - v^{2} x^{2}) (v d x + x d v)

s im pl i f y \frac{z x ^{2} - z ^{2}}{4} + \frac{z ( P - z - 2 x )}{2}

e x p an d (F (2) = 5 (2)^{3} - 2 (2)^{2} + 3 x - 1) (x - 1) (x + 3)

s im pl i f y (x - 6 + 7) (x - 6 - 7)