求 int (sin )^4xdx

（0.7分）int sin 4xdx=dfrac (1)(4)int sin 4xdx=dfrac (1)(4)cos 4x+cA 正确B 错误89

int 4xdx=填空题（共13题，30.0分）22.（2.3分）$\int 4xdx=$

int (tan )^4xdx; ;

设=(int )_(-dfrac {pi )(2)}^dfrac (pi {2)}dfrac (sin x)(1+{x)^2}(cos )^4xdx, =(in

A int cos xdx=sin x+CB int cos xdx=sin x+CC int cos xdx=sin x+CD int cos xdx=sin

(4) int (e)^x(sin )^2xdx.

(4)int_((pi)/(4))^(pi)/(3)(x)/(sin^2)xdx;(4)$\int_{\frac{\pi}{4}}^{\frac{\pi}{3}

int (sin )^3x(cos )^5xdx= __ A.int (sin )^3x(cos )^5xdx= __ B.int (sin )

求下列不定积分:-|||-(26) int sin 2xcdot cos 3xdx;

.(int )_(e)^x(sin )^2xdx.