Revision as of 13:00, 13 October 2008 by Idryg (Talk)

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  • I didn't get the right answer according to the back of the book. I got:

$ x + 4 = Ax + A + Bx - 6B = (A + B)x + A - 6B $

Meaning:

$ A + B = 1 $

and

$ A - 6B = 4 $

So, $ A = \frac{10}{7} $ and $ B = -\frac{3}{7} $

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Basic linear algebra uncovers and clarifies very important geometry and algebra.

Dr. Paul Garrett