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OpenStudy (anonymous):
Since the hyperplane x1 + 2x2 3x3 + 4x4 = 0 is a 3 dimensional subspace of R^4, we know it is the span of 3 vectors. Which 3?
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OpenStudy (anonymous):
Opps I meant x1 + 2x2 + 3x3 + 4x4 = 0 (and the X's are variables and the numbers afters are subscripts.
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