Up: 1.48(a)
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![](img1.gif)
Write
as a linear combination
, i.e.,
find a and b so that ![](img4.gif)
![](img5.gif)
![](img6.gif)
Eliminate a from equation (2) by substracting 2 times (1):
![](img7.gif)
Solve from the bottom up, (2') giving that b=-1 and then
(1) giving that a=5.
Up: 1.48(a)
Previous: 1.48(a), §1 Asked