Could someone help me out with questions (a) and (c), just the first couple of steps.

Any help is appreciated! (Rofl)

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- Apr 13th 2010, 02:22 PMDarKDetermine if W is a subspace of the vector space V.
Could someone help me out with questions (a) and (c), just the first couple of steps.

Any help is appreciated! (Rofl) - Apr 13th 2010, 07:06 PMdwsmith
The axioms are scalar multiplication and vector addition, correct?

- Apr 13th 2010, 07:13 PMDarK
- Apr 13th 2010, 07:23 PMdwsmith
part c

where

Therefore,

Do addition the same way. - Apr 13th 2010, 07:34 PMdwsmith
The key to the addition is that a and b aren't negative.

- Apr 13th 2010, 08:07 PMDarK
- Apr 13th 2010, 08:10 PMdwsmith
If k is negative, a and b are still positive.

ka=w would be negative. - Apr 13th 2010, 08:14 PMdwsmith
The reason the problem says that is so this doesn't happen:

- Apr 13th 2010, 08:19 PMDarK
Ok, that makes alot more sense, thank you!