[题目] lim _(xarrow +infty )dfrac ({x)^3+(x)^2+1}({2)^x+(x)^3}(sin x+cos x)= __

[题目]求 lim _(xarrow infty )((sin dfrac {2)(x)+cos dfrac (1)(x))}^x

[题目]求极限 lim _(xarrow infty )((sin dfrac {2)(x)+cos dfrac (1)(x))}^x= __

[题目]求极限 lim _(xarrow 0)dfrac (3sin x+{x)^2cos dfrac (1)(x)}((1+cos x)ln (1+x))

(3) lim _(xarrow infty )xsin dfrac (x)(2{x)^2+1} ,

(11) lim _(xarrow 0)dfrac (3sin x+{x)^2cos dfrac (1)(x)}((1+cos x)ln (1+x))= __

求下列极限:-|||-lim _(xarrow +infty )(({2)^x+(3)^x)}^dfrac (1{x)}

求lim _(xarrow infty )dfrac (sin dfrac {3)(x)}(sin dfrac {2)(x)}求

[题目]极限 lim _(xarrow infty )xsin dfrac (2x)({x)^2+1}= __

【题目]-|||-lim _(xarrow infty )x sin [ 1+dfrac {3)(x))] -sin [ ln (1+dfrac (1)(x))

计算__-|||-lim _(xarrow infty )((sin dfrac {1)(x)+cos dfrac (1)(x))}^x计算