(x+sin(x))/x求当x趋近于0的极限

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(x+sin(x))/x求当x趋近于0的极限
(x+sin(x))/x求当x趋近于0的极限

(x+sin(x))/x求当x趋近于0的极限
分子分母分别求导,得:
=[(x+sinx)'/[(x)']
=1+cosx
再以x=0代入,得:
=2

lim(1+sin(x)/x)=2

lim(x+sin(x))/x
=lim(1+sinx/x)=2

2
过程留给所谓高手吧

lim(x→0)(x+sin(x))/x
=lim(x→0)(1+sin(x)/x)
=1+lim(x→0)sin(x)/x
2