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5. Given vectors a = (2,5, -5) and b = 21 - 7] + 3k a) Find a + b and write the answer in

5. Given vectors a = (2,5, -5) and b = 21 - 7] + 3k a) Find a + b and write the answer in the standard unit vectors i, j, k, form. d) Find lla - bll . e) Find the dot product a . b f) Find the cross product a x b g) Find the cross product 2b x a

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