

[题目]设 (dfrac (1)(x))=dfrac (x)({x)^2+1} 则 f(x)=
10.求下列函数的极值:-|||-(1) (x)=|x((x)^2-1)|;-|||-(2) (x)=dfrac (x({x)^2+1)}({x)^4-(x)^
int (x)^3(e)^-(x^2)dx=(,,,,,)A、dfrac(1)(2)(e)^-(x^2)((x)^2+1)+CB、-dfrac(1)(2)(e)
单选题-|||-(中)-|||-已知函数 =dfrac ({x)^2+1}(x) ,则 ^m= __-|||-A .dfrac ({x)^2-1}({x)^2}
int dfrac ({x)^2}({x)^2+1}dx ,
求下列函数的微分:-|||-(1) =dfrac (1)(x)+2sqrt (x);-|||-(2) =xsin 2x;-|||-(3) =dfrac (x)(
求下列函数的微分:-|||-(1) =dfrac (1)(x)+2sqrt (x);-|||-(2) =xsin 2x;-|||-(3) =dfrac (x)(
9、 int dfrac (1)(({x)^2+1)(x)^2}dx= __ 。
int dfrac ({x)^2+1}({(x+1))^2(x-1)}dx;;
求lim _(xarrow infty )dfrac (ln (x+sqrt {{x)^2+1)}-ln (x+sqrt ({x)^2-1})}({({e)^d