lim(x趋向1)(x+2)/{(x^2)-1}=
举一反三
- lim(1-x)tan派x/2（x趋向1）
- 【单选题】若 f ( x ) = ( x − 1 ) x 2 − 1 2 , g ( x ) = x − 1 x + 1 ,则? A. f ( x ) = g ( x ) "> f ( x ) = g ( x ) B. lim x → 1 f ( x ) = g ( x ) "> lim x → 1 f ( x ) = g ( x ) C. lim x → 1 f ( x ) = lim x → 1 g ( x ) "> lim x → 1 f ( x ) = lim x → 1 g ( x ) D. 以上等式均不成立
- lim（x/2）^（x/x-2）.x趋向于2!第二题：lim（e^（x）-1/x）.x趋向于0
- 不等式（x+2）（x-1）＞0的解集为 A: {x|x＜-2或x＞1} B: {x|-2＜x＜1} C: {x|x＜-1或x＞2} D: {x|-1＜x＜2}
- 求极限lim(x→1)(2/x^2-1)-(1/x-1)