展开-j/((1-2j)*(1+2j))

解答

展开

- \frac{j}{( 1 - 2 j ) \cdot ( 1 + 2 j )}

- \frac{j}{1 - 4 j ^{2}}

求解步骤

- \frac{j}{( 1 - 2 j ) ( 1 + 2 j )}

乘开

(1 - 2 j) (1 + 2 j) : 1 - 4 j^{2}

= - \frac{j}{- 4 j ^{2} + 1}

e x p an d \frac{d}{d x} \frac{( 50 ( x - 2 ) ^{3} )}{e ^{x}} + 10

e x p an d \frac{8}{( s - 2 ) ( s ^{2} - 4 s + 20 )}

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

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

e x p an d lo g_{7} (3 x^{5})