推荐回答（1个）
楼上答得不对。
极限存在是指当X以任意方式趋向于无穷的时候，极限值相同
而xsinx
若以
x=nπ接近无穷时，极限值为0
而以x=2nπ+π/2接近无穷时，极限值为正无穷。
故极限不存在
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