1.) Given the set with these two vectors:

I have to find the value(s) of a that makes it linearly depedent.

WORK:

Well, they are lin. dep. if they are multiples of each other. So I eye-balled it (not sure how else to do it) and saw that a = 3 will make it lin. dep because then you have the two rows are multiples of each other (scalar of 2)

Is that the only value?

2.) Like above..but with 1 more vector..given the set with these 3 vectors:

I have to find the value(s) of a that makes it linearly depedent.

WORK:

I can't eye-ball any a that will make these multiples of each other or will make a whole column all 0....I conclude that there is no value a for which this is linearly dependent??