Find a number a so that the vectors (a,2+a,6) and (2,1,-3) are parallell.

How do I do that?

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- Sep 14th 2006, 10:29 AMa4sweThe art of making vectors parallell
Find a number a so that the vectors (a,2+a,6) and (2,1,-3) are parallell.

How do I do that? - Sep 14th 2006, 10:39 AMPlato
- Sep 14th 2006, 10:43 AMThePerfectHacker
- Sep 14th 2006, 11:02 AMPlato
- Sep 14th 2006, 11:07 AMThePerfectHacker
- Sep 14th 2006, 11:12 AMa4swe
Thanks.

But can I say anything about parallelity considering the soultion set of some particullar linear equation system?

And Plato, what you said is equavilent with: "Two vectors are parallell if they are linear dependent" right? - Sep 14th 2006, 11:36 AMPlato
I am almost afraid to answer not really understanding the question.

But yes two parallel vectors are linearly dependent.

I do not understand what you mean by ‘system’. - Sep 14th 2006, 11:47 AMa4swe
By system I mean a collection of two or more equations.

But that was another question. - Sep 14th 2006, 12:33 PMa4swe
And just now I realized that my first question in my second post was a stupid one, problem completly solved, thank you Plato.