1 ) u - 2u - 2v - 1/3 v
- u - 7/3 v
2) - 2/5 u + u - 1/4 u + 1/4 v
7/20 u + 1/4 v
3) 1/2 u - 1/2 v - 1/3 u - 1/3 v
1/6 u - 5/6 v
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1 ) u - 2u - 2v - 1/3 v
- u - 7/3 v
2) - 2/5 u + u - 1/4 u + 1/4 v
7/20 u + 1/4 v
3) 1/2 u - 1/2 v - 1/3 u - 1/3 v
1/6 u - 5/6 v