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[" 3.) For any vector "vec a,|vec a time...

[" 3.) For any vector "vec a,|vec a timeshat imath|^(2)+|vec a timeshat jmath|^(2)+|vec a timeshat k|^(2)" is equal to "],[[" (a) ",2a^(2)," (b) ",3a^(2)]]

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