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Find values of a making one vector parallel to the other

  • #1
Find values of "a" making one vector parallel to the other

Homework Statement



Find the value(s) of a making vector v = 4ai - 2j, parallel to vector w = a^2i +4j

Homework Equations


P= (a dot b/ magnitude b^2) (bi, bj)


The Attempt at a Solution


I can plug and chug, but at what point do you solve for a?
 

Answers and Replies

  • #2
Dick
Science Advisor
Homework Helper
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If you can find a vector that's perpendicular to v, then you can just plug and chug on finding when u.w=0.
 

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