高等数学极限与连续习题(4)

1. x3 2x 4求极限lim x 2x2 4

cos3x cos2x2. 求极限lim 2x 0ln(1 x)2

3. (ex 1)求极限lim x 0xln(1 6x)

(ex 1)sinx4. 求极限lim x 0xln(1 6x)

5. 求极限limx 0

6. 求极限limx 0(1 cosx)sinx 2xln(1 6x)1 cosx x(e2x 1)