Q17: Given: a = i + j + k, a. b = 1 and a × b = j - k. Then, b is equal to

A. -2i

B. 2i + k

C. 3j

D. i

how?

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- February 10th 2011, 10:51 PMbahadaraliCross product.

Q17: Given: a = i + j + k, a. b = 1 and a × b = j - k. Then, b is equal to

A. -2i

B. 2i + k

C. 3j

D. i

how? - February 10th 2011, 11:23 PMProve It
An idea might be to start by defining so that you can get expressions for and , which you then should be able to solve simultaneously for ...