(int )_(-dfrac {pi )(2)}^dfrac (pi {2)}dfrac (|x|sin x)(1+{cos )^3x}dx=(int )_(-
2.求下列函数的极值:-|||-(6) (x)=sin x+cos x(-dfrac (pi )(2)leqslant xleqslant dfrac (pi
=-sqrt (2)(sin dfrac (pi )(6)+icos dfrac (pi )(6))的指数表达式为( )。A =-sqr
求lim _(xarrow dfrac {pi )(2)}dfrac (ln sin x)({(pi -2x))^2}求
已知函数 (x)=dfrac (1)(2)sin (2x-dfrac (pi )(3)) x∈R,-|||-(1)求f(x)的最小正周期;-|||-(2)求f(
( (int )_(dfrac {pi )(4)}^dfrac (pi {3)}dfrac (x)({sin )^2x}dx ;
[题目]计算定积分: (int )_(-dfrac {pi )(2)}^dfrac (pi {2)}((|x|+sin x))^2dx
函数(x)=sin (2x+dfrac (pi )(6))的最小正周期为 .函数的最小正周期为 .
函数(x)=sin (2x+dfrac (pi )(6))的最小正周期为___________ .10 . 函数的最小正周期为___________ .
设(X,Y)的分布函数为(x,y)=dfrac (1)({pi )^2}(dfrac (pi )(2)+arctan dfrac (x)(2))(dfrac (