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5 December, 07:45

State whether each expression is meaningful. If not, explain why. If so, state whether it is a vector or a scalar. (a) a · (b *

c. The expression is meaningful. It is a vector. The expression is meaningful. It is a scalar. The expression is meaningless. The cross product is defined only for two vectors.

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  1. 5 December, 08:14
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    we are given

    a · (b * c)

    we know that

    cross product of two vectors are vector

    and dot product of two vectors are scalar

    (b * c) is cross product of vectors b and c

    so, (b * c) = vector

    a · (vector) is dot product of two vectors

    so, a · (vector) = scalar

    so, this expression is meaningful

    and

    a · (b * c) = scalar ... Answer
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