PHYSICS!! SOS

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Determine the scalar product of A= 3.0i + 1.0j - 2.0k and B= 3.0i - 2.0j - 3.0k .

  • PHYSICS!! SOS -

    take the dot product...

    remember i dot i is 1, j dot j is 1, k dot k is 1, whereas any of the ij, jk, ki dot products is zero.

    I will start you.

    A dot B= 3i dot 3i + 1j dot(-2j) + ....

    A.B=9+(-2)+ ...

    then add them

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