求极限lim(x→∞) (1/(x-2)-12/(x³-8))要过程

来源:学生作业帮助网 编辑:作业帮 时间:2024/04/30 12:38:09

求极限lim(x→∞) (1/(x-2)-12/(x³-8))要过程
求极限lim(x→∞) (1/(x-2)-12/(x³-8))要过程

求极限lim(x→∞) (1/(x-2)-12/(x³-8))要过程
lim(x→∞) (1/(x-2)-12/(x³-8))
=lim(x→∞) ((x²+2x+4)/(x³-8)-12/(x³-8))
=lim(x→∞) (x²+2x-8)/(x³-8)
上下同除x³
则原式=lim(x→∞) (1/x+2/x²-8/x³)/(1-8/x³)
=0/(1-0)
=∞

Never Say Good Bye - 毵堧Μ鞓れ暏霌?0D%0A 阔╁墽銆婃垜镄勫コ瀛(One more time now)baby浣犱笉瑕佽 鎴戦毦杩?0D%0A 1,2 baby clap