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lim(π-x)tan(x/2)(x趋向于π)
人气:168 ℃ 时间:2020-03-30 02:12:26
解答
lim(π-x)tan(x/2)(x趋向于π)
=lim(π-x)sin(x/2)/cos(x/2)
=lim(π-x)/[sin(π-x)/2]*limsin(x/2)
=2*1=2
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