展开 (x-cos(x)(mx+1)-arctan(x)+1)/(x^4(m+1))

解答

展开

\frac{x - cos ( x ) ( m x + 1 ) - arctan ( x ) + 1}{x ^{4} ( m + 1 )}

\frac{x - x m cos ( x ) - cos ( x ) - arctan ( x ) + 1}{x ^{4} m + x ^{4}}

求解步骤

\frac{x - cos ( x ) ( m x + 1 ) - arctan ( x ) + 1}{x ^{4} ( m + 1 )}

乘开

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

= \frac{x - cos ( x ) ( x m + 1 ) - arctan ( x ) + 1}{x ^{4} m + x ^{4}}

乘开

x - cos (x) (m x + 1) - arctan (x) + 1 : x - x m cos (x) - cos (x) - arctan (x) + 1

= \frac{x - x m cos ( x ) - cos ( x ) - arctan ( x ) + 1}{x ^{4} m + x ^{4}}

e x p an d A (2, - 3) B (5, 2)

s im pl i f y (x - \frac{1}{4}) (x + 2)

e x p an d 2 (x^{2} + x + 1) (2 x^{'} + 1)

e x p an d (1 + \frac{7}{x})^{\frac{1}{2}}

s im pl i f y (1 - 3 i)^{15}