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#1 2009-10-07 16:04:06
- mathsforumhelp
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- Registered: 2009-10-07
- Posts: 14
Dimension of u
In this question you are asked to find the dimension the subspace U of R5 given by:
U is set of vectors of the form (2 a, a, a, a - 4 b, a + b)
The dimension of U is
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#2 2009-10-07 23:34:09
- mathsyperson
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- Registered: 2005-06-22
- Posts: 4,900
Re: Dimension of u
U has dimension 2 - all the vectors in that form are a linear combination of these two:
(2,1,1,1,1)
(0,0,0,-4,1)
Why did the vector cross the road?
It wanted to be normal.
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