展开 (5x)/(2(2x^2+1))

解答

展开

\frac{5 x}{2 ( 2 x ^{2} + 1 )}

\frac{5 x}{4 x ^{2} + 2}

求解步骤

\frac{5 x}{2 ( 2 x ^{2} + 1 )}

乘开

2 (2 x^{2} + 1) : 4 x^{2} + 2

= \frac{5 x}{4 x ^{2} + 2}

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

e x p an d cos (2 t) U (t - \frac{13 π}{4})

e x p an d \frac{( 8 + x ^{2} ) ^{2}}{16}

e x p an d 2 (x - \frac{π}{4})

e x p an d \frac{290400 x ( - x + 1 )}{145 x ^{2} + 2 x + 1}