#求过程#高数题！！！！救救孩子吧！！！(19) int tan sqrt (1+{x)^2}cdot dfrac (xdx)(sqrt {1+{x)^2}}-|||-(20) int dfrac (arctan sqrt {x)}(sqrt {x)(1+x)}dx-|||-21 int dfrac (1+ln x)({(xln x))^2}dx;-|||-(22 int dfrac (dx)(sin xcos x);-|||-(23)∫cosxsinx-|||-(24)|cos^3xdx-|||-(25) int (cos )^2(omega t+varphi )dt;-|||-bigcirc (16)int sin 2xcos 3xdx;-|||-(27) int cos xcos dfrac (x)(2)dx;-|||-(28)|sin5xsin 7xdx;-|||-(29)int (tan )^3xsec xdx;-|||-(30) int dfrac (dx)({e)^x+(e)^-x}-|||-(31) int dfrac (1-x)(sqrt {9-4{x)^2}}dx;-|||-(32) int dfrac ({x)^3}(9+{x)^2}dx;-|||-(33) int dfrac (dx)(2{x)^2-1};-|||-3 int dfrac (dx)((x+1)(x-2)):-|||-(35) int dfrac (x)({x)^2-x-2}dx;-|||-36) int dfrac ({x)^2dx}(sqrt {{a)^2-(x)^2}}(agt 0) :-|||-(77 int dfrac (dx)(xsqrt {{x)^2-1}};-|||-(38) int dfrac (dx)(sqrt {{({x)^2+1)}^3}}-|||-(39) int dfrac (sqrt {{x)^2-9}}(x)dx;-|||-40) int dfrac (dx)(1+sqrt {2x)};-|||-(41) int dfrac (dx)(1+sqrt {1-{x)^2}};-|||-(42) int dfrac (dx)(x+sqrt {1-{x)^2}}-|||-(43) int dfrac (x-1)({x)^2+2x+3}dx;-|||-(44) int dfrac ({x)^3+1}({({x)^2+1)}^2}dx.

#求过程#高数题！！！！救救孩子吧！！！

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#求过程#高数题！！！！救救孩子吧！！！(19) int tan sqrt (1+{x)^2}cdot dfrac (xdx)(sqrt {1+{x)^2}}-|||-(20) int dfrac (

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