Find a basis for the subspace R3 defined by

{(3a,5b,2a-b): a,b are members of R}

- Oct 27th 2009, 10:29 AMpasleycakesFind a basis for the subspace R3 defined by {(3s,5b,2a-b):a,b R}
Find a basis for the subspace R3 defined by

{(3a,5b,2a-b): a,b are members of R} - Oct 27th 2009, 10:54 AMSwlabr
What is " "?

When you are given a set in a general form you can quite easily come up with a spanning set. You just split up the general form into vectors containing one and only one of the variables. For instance, " ", and then take out the variables and you will have yous spanning set. So here " " would become " " which is a member of your spanning set.

You then have to ask if this spanning set is a basis or not. That is, is it linearly independent. - Oct 28th 2009, 07:43 AMHallsofIvy
- Oct 28th 2009, 08:13 AMSwlabr
- Oct 28th 2009, 05:35 PMmath2009

So basis - Oct 29th 2009, 12:43 AMSwlabr
- Oct 29th 2009, 05:00 PMmath2009
- Oct 30th 2009, 01:43 AMSwlabr