arctan(1⼀x^2)求x趋近于0的极限怎么求?请详细的解答!谢谢!!!

2025-03-17 03:02:32
推荐回答(1个)
回答1:

答:

设1/x^2=t
lim(x→0) arctan(1/x^2)
=lim(t→+∞) arctan(t)
=π/2