06_hwc1SolnsODDA

06_hwc1SolnsODDA - a b and a-b as arrows as in the examples...

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(a) Compute 3 a , a + b and a - b . (b) Draw a diagram in the plane showing a and 3 a as arrows, as in the examples of this section. (c) Draw a diagram in the plane showing a , b and a + b as arrows, as in the examples of this section. (d) Draw a diagram in the plane showing
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Unformatted text preview: a , b and a-b as arrows, as in the examples of this section. SOLUTION (a) 3 ± 1-1 ² = ± 3-3 ² , ± 1-1 ² + ± 2 1 ² = ± 3 ² , ± 1-1 ²-± 2 1 ² = ±-1-2 ² (b) (c) (d) 21 /september/ 2005; 22:09 7...
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