反三角函数 极限

X趋向0求lim X/arc2x极限
2025-02-26 19:15:16
推荐回答(1个)
回答1:

今arcsin2x=t, 2x=sint, x=1/2sint,
当X趋向0时,t趋向0
X趋向0求lim X/arc2x极限=t趋向0求lim 1/2sint/t极限=1/2