=lim (2sin^2 x/2) /x^2为什么等于 1/2 lim (sin^2 x/2)/(x/2)^2
问题描述:
=lim (2sin^2 x/2) /x^2为什么等于 1/2 lim (sin^2 x/2)/(x/2)^2
答
=lim (2sin^2 x/2) /x^2为什么等于 1/2 lim (sin^2 x/2)/(x/2)^2