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[" 8.If "bar(a)" and "bar(b)" are unit v...

[" 8.If "bar(a)" and "bar(b)" are unit vectors then the vector "],[(bar(a)+bar(b))times(bar(a)timesbar(b))" is parallel to the vector "],[[" 1) "bar(a)-bar(b)," 2) "bar(a)+bar(b)," 3) "2bar(a)-bar(b)," 4) "2bar(a)+bar(b)]]

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