T h e l i n e i s j u s t t h e e n d p o i n t s o f

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Unformatted text preview: e n d i c u l a r t o b o t h : c ro s s p ro d u c t ! T h e l i n e i s j u s t t h e e n d p o i n t s o f v e c t o rs o f t h e f o rm where ranges over all scalars. Parametric equations! Last step: expand cross product T o d e s c ri b e , let's expand: So the line is given by the endpoints of the vectors Parametric form: As varies, this traces out the line of intersection. More practice Describe the intersection of a n d Describe the intersection of . a n d Describe the intersection of . a n d ....
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