cos 2x(e)^-x+ sin 2x(e)^-xdx-|||-B.cos2xe^(-x)- sin 2x(e)^-xdx-|||-. cos 2x(e)^
27、下列函数中,偶函数是( ).A.=(x)^2sin x+1B.=(x)^2sin x+1C.=(x)^2sin x+1D.=(x)^2sin x
24.[填空题]int_(-1)^1x^2sin xdx=____24.[填空题]$\int_{-1}^{1}x^{2}\sin xdx=$____
定积分(int )_(-1)^1((x)^2020+1)sin xdx=0.( )(int )_(-1)^1((x)^2020+1)sin xdx=0错(in
在[0, pi]上,由轴与正弦曲线y=sin x所围图形的面积为()A. 1B. 2C. 5D. 6
不定积分 int (dfrac (1)({x)^2}+2sin x+dfrac (1)(x))dx= ( )不定积分 ()A.B.C.D.
int((1)/(sin^2 x)+1)d(sin x)= ().A. $-\frac{1}{\sin x}+\sin x+C$B. $\frac{1}{\si
[题目]计算: (int )_(-2)^2sin 2xdx= __
A int cos xdx=sin x+CB int cos xdx=sin x+CC int cos xdx=sin x+CD int cos xdx=sin
lim _(xarrow 0)dfrac ({x)^2sin dfrac (1)(x)}(tan x)=A.0B.1C.lim _(xarrow 0)dfrac