求lim _(xarrow 0)(xsin dfrac (1)(x)+dfrac (1)(x)sin x)=

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求极限lim _(xarrow 0)cot x(dfrac (1)(x)-dfrac (1)(sin x))-|||-__解法如下，原式lim _(xarrow

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lim _(xarrow infty )(dfrac (1)(x)sin 5x+xsin dfrac (8)(x))=

lim _(xarrow 0)dfrac (1)(x)sin dfrac (1)(x)？？

求lim _(xarrow 0)(dfrac (1)({sin )^2x}-dfrac (1)({x)^2}).求.

[题目] lim _(xarrow 0)(dfrac (1)({x)^2}-dfrac (1)(xsin x))

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lim _(xarrow 0)cot x(dfrac (1)(sin x)-dfrac (1)(x))= __