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Let u = <3, -1>, v = <-6, -6>. Find 9u + 2v.

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calculus

asked Aug 4, 2014 in CALCULUS by Tdog79 Pupil

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1 Answer

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u=<3,-1> and v=<-6,-6>

First calculate 9u

9u = 9<3,-1>

=<9(3),9(-1)>

=<27,-9>

Next find 2v

2v=2<-6,-6>

=<2(-6),2(-6)>

=<-12,-12>

9u+2v= <27,-9>+<-12,-12>

=<(27-12),(-9-12)>

=<15,-21>

answered Aug 4, 2014 by anonymous

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