• 若直线和坐标轴都相交,则有 :middle;" src="http://tikucommon-zs.oss-cn-beijing.aliyuncs.com/tiku/source/image/12313/swd00290854.gif">且 。试题及答案-填空题-云返教育

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      若直线和坐标轴都相交,则有         :middle;" src='http://tikucommon-zs.oss-cn-beijing.aliyuncs.com/tiku/source/image/12313/swd00290854.gif'>且

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      此时斜率存在且不为零,即
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