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Let u = <-5, -3>, v = <-6, -1>. Find -3u + 5v
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Let u = <-5, -3>, v = <-6, -1>. Find -3u + 5v

User Dublx
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3 votes

The answer below is correct, it is <-15,4>

User Manuel Alvarez
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u=<-5,-3>, v=<-6,-1>
-3u+5v=?
-3u+5v=-3<-5,-3>+5<-6,-1>
-3u+5v=<(-3)(-5),(-3)(-3)>+<(5)(-6),(5)(-1)>
-3u+5v=<15,9>+<-30,-5>
-3u+5v=<15+(-30),9+(-5)>
-3u+5v=<15-30,9-5>
-3u+5v=<-15,4>

Answer: -3u+5v=<-15,4>
User Santh
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