lim→0（x^2sin（1/x））/(e^x-1)
举一反三
- （1）lim(x-1)/sin(x-1),x趋向于1
- ①lim(x→∞)sin(1/x)/(1/x)等于多少?②lim(x→0)sin(1/x)/(1/x)等于多少?
- \( \lim \limits_{x \to 0} {x^2}\sin {1 \over x} =\)______。______
- \( \lim \limits_{x \to 0} { { \sqrt {1 + x\sin x} - \cos x} \over { { {\sin }^2}{x \over 2}}} = \)______ 。
- 求极限\( \lim \limits_{x \to 0} { { {x^2}\sin {1 \over x}} \over {\sin x}}{\rm{ = }}\)______