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?

Printable View

- Feb 10th 2011, 11:51 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? - Feb 11th 2011, 12:23 AMProve 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 ...