Answer to Question #236235 in Math for luka

Question #236235

Using a =(3,4) and b=(2,-1) as base vectors, express the vector C =(7,2) in form ya+ub

Expert's answer

"xa+yb=c"

"3x+2y=7"

"4x-y=2"

"x=1,y=2"

So, "c=a+2b"

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