limx->0(4x-sin3x)/tan5x
问题描述:
limx->0(4x-sin3x)/tan5x
加减不能用等价无穷小替换吧
答
limx->0(4x-sin3x)/tan5x
=limx->0 4x/tan5x -lim(x->0)sin3x/tan5x
=4/5-3/5
=1/5