Let u = i + 2j - k, v =-i + j + k, w = i + k, r =-(pa/i2)i - pai j + (pai/2)k. Which vectors, if any, are (a) perpendicular? (b) Parallel? Give reasons for your answers
Let u = i + 2j - k, v =-i + j + k, w = i + k, r =-(pa/i2)i - pai j + (pai/2)k. Which vectors, if any, are (a) perpendicular? (b) Parallel? Give reasons for your answers
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