u=2i+j, v= i+j, and w= i-j. u = av +bw where a and b are scalars. find a and b. I have tried a buttload of numbers and none seem to work because one when I add them together to form u one is negative and there is no negative in u.
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Originally Posted by hotdogking u=2i+j, v= i+j, and w= i-j. u = av +bw where a and b are scalars. find a and b. I have tried a buttload of numbers and none seem to work because one when I add them together to form u one is negative and there is no negative in u. Note that (just thought I would mention that, just in case my notation confused you). Plug the vectors into the equation to get Therefore, and . Can you solve these for a and b?
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