求极限 lim(x→0)((x^2+1)^(1/2))/(1-cosx)

问题描述:

求极限 lim(x→0)((x^2+1)^(1/2))/(1-cosx)

x→0时,(x^2+1)^(1/2)→1
1-cosx→0
所以lim(x→0)((x^2+1)^(1/2))/(1-cosx)→∞
如果问题没错应该是这样