求极限 lim x趋于0 tan2x+sinx/x
问题描述：
求极限 lim x趋于0 tan2x+sinx/x
答
lim(x→0)[tan2x+sinx/x]
=lim(x→0)tan2x+lim(x→0)[sinx/x]
=tan0+1
=0+1
=1
答
lim(x->0)(tanx+tanx)/(1-tan^2x)=lim(x->)0(2x)/(1-x^2)=0,
lim(x->0)sinx/x=1,
0+1=1