2024-02-25 06:10
匿名用户
2024-02-25 09:39
=lim xe^x²=e
=lim 2x*x^3/[x(x-sinx)]
=lim 2x^4/[x(x-sinx)]
=lim 2x^3/(x-sinx)
=lim 6x²/(1-cosx)
=lim 12x/sinx
=12
