展开 1/(2(1-cos(x)))

解答

展开

\frac{1}{2 ( 1 - cos ( x ) )}

\frac{1}{2 - 2 cos ( x )}

求解步骤

\frac{1}{2 ( 1 - cos ( x ) )}

乘开

2 (1 - cos (x)) : 2 - 2 cos (x)

= \frac{1}{2 - 2 cos ( x )}

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

e x p an d \frac{- 50}{( s + 0.5 ) ( 0.2 s + 1 )}

e x p an d \frac{1}{x ( K - x )}

e x p an d (e^{t} + 1) h (t - 2)

e x p an d (\frac{3 !}{2 ! 1 !}) (\frac{9}{16})^{1} (\frac{7}{16})^{2}