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OpenStudy (johnweldon1993):
Drawing such a blank! Find a vector, unit in length, that is parallel to the plane 3x-y+7z = 5 and perpendicular to the vector <1,-1,2>
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OpenStudy (johnweldon1993):
Normal vector would be <3,-1,7>
OpenStudy (johnweldon1993):
So any vector perpendicular to this normal would be parallel to the plane
jimthompson5910 (jim_thompson5910):
yep so you want to find a vector that is perpendicular to both <3,-1,7> and <1,-1,2>
OpenStudy (johnweldon1993):
cross product! -_-
jimthompson5910 (jim_thompson5910):
you will compute the cross product of those two vectors, yep you beat me to it lol
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OpenStudy (johnweldon1993):
Thank you jim! lol I guess I just needed someone to say it differently...thats enough math for today! lol
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