lim(1⼀1-x-3⼀1-x3)当x趋近于1时,怎么求极限啊

2025-04-03 17:48:04
推荐回答(1个)
回答1:

lim(1/(1-x)-3/(1-x3)
=lim(1+x+x^2-3)/(1-x3)
=lim(x-1)(x+2)/(1-x3)
=lim(-(x+2)/(1+x+x^2)
=-1