1.lim x→0 3x/(sinx-x)2.lim x→0 (1-cosmx)/x^23.lim x→0 sin4x/[(√x+2)-√2]4.lim h →0 [sin(x+h)-sin(x-h)]/h

问题描述:

1.lim x→0 3x/(sinx-x)
2.lim x→0 (1-cosmx)/x^2
3.lim x→0 sin4x/[(√x+2)-√2]
4.lim h →0 [sin(x+h)-sin(x-h)]/h