limx趋向无穷 xcos1/x的极限 limx趋向0xtanx的极限
lim(x-->∞)cos1/x=1lim(x-->∞)x=∞
∴x-->∞时,xcos1/x-->∞
lim(x-->∞)xcos1/x=∞
lim(x-->0)tanx=0
lim(x-->0)xtanx=0
扩展阅读:limx ∞sinx x ... lim xcotx ... limx 负无穷xe x ... limx 无穷xlnx ... limx 1 ... 极限limx 1 ... limx 无穷x 2 ... limx 无穷cosx除以x ... vlimx ...