;
;
【65】int(x^2+1)/((x+1)^2)(x-1)dx.【65】$\int\frac{x^{2}+1}{(x+1)^{2}(x-1)}dx$.
.int dfrac ({(x+1))^2}({({x)^2+1)}^2}dx.
int dfrac (dx)(sqrt [3]{{(x+1))^2((x-1))^4}}
int dfrac (dx)(sqrt [3]{{(x+1))^2((x-1))^4}}
int dfrac (dx)(sqrt [3]{{(x+1))^2((x-1))^4}}
int dfrac ({x)^2}({x)^2+1}dx ,
9、 int dfrac (1)(({x)^2+1)(x)^2}dx= __ 。
int dfrac ({(x+1))^2}({x)^2}dx=
int dfrac (x+1)({x)^2+x+1}dx.
int (x)^3(e)^-(x^2)dx=(,,,,,)A、dfrac(1)(2)(e)^-(x^2)((x)^2+1)+CB、-dfrac(1)(2)(e)