Given that a = 2i + j and b =i + 3j find a) if b is parrallel to the vector i b) if a + b is parrallel to the vector j ?
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Originally Posted by Tweety Given that a = 2i + j and b =i + 3j find a) if b is parrallel to the vector i b) if a + b is parrallel to the vector j ? ai+ bj and ci+ dj are parallel if and only if a/b= c/d.
Originally Posted by HallsofIvy ai+ bj and ci+ dj are parallel if and only if a/b= c/d. I am still not sure how I work out the value of , how do I get 'rid' of the j component ?
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