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OpenStudy (anonymous):
Given the vectors v=-2i+5j and w=3i+4j, determine 1. (1/2)v 2. W-v 3. length of W 4. the unit vector for v
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OpenStudy (anonymous):
1. take 1/2 of the numbers in front of the letters for v. 2. subtract like parts... w - v = <w_i - v_i, w_j - v_j> 3. length is using the pythagorean theorem (in a way)... length = sqrt[ (# with i)^2 + (# with j)^2 ] 4. unit vectot is just the vector divided by it's length
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