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OpenStudy (anonymous):
HELP!!! Given v=(5,-1) and u=(6,-4) find 3v+2u
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terenzreignz (terenzreignz):
Vectors.. first, find 3v. (and 2u) Basically, you multiply all the components in v by 3. and so 3v = ?
OpenStudy (anonymous):
v=15,-3 u=12,-8
terenzreignz (terenzreignz):
You mean 3v and 2u right? :)
OpenStudy (anonymous):
yeah
terenzreignz (terenzreignz):
Well, just add them up :) Add individual components...
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terenzreignz (terenzreignz):
Add their left-coordinates, add their right-coordinates :D
OpenStudy (anonymous):
Is it (27,-14)
terenzreignz (terenzreignz):
No... you might want to check -3 - 8 again :P
OpenStudy (anonymous):
-11 whoops
terenzreignz (terenzreignz):
yeah that's the one :D
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OpenStudy (anonymous):
Alright thanks!
terenzreignz (terenzreignz):
No problem :)
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