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Vectors

Figure 1

1. If two vectors a and b are placed so that they form the sides of a triangle( Figure 1 ), what is the vector along the third side? Let the vectors point as shown.

Answer

b - a

2. a and b lie along the sides of a triangle, as shown in Figure 1. What is the median from their common vertex to the opposite side?

Answer

( a + b )/2

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