Question

Calculate the following: -

A=5i-3j+4k; B= 4i-2j+k. Find (A.B) and (A X B)

[‘Bold’ represents Vector​

Answer 1

Explanation:

A = 5i-3j+4k; B = 4i-2j+k

A•B = 5(4) + (-3)(-2) + 4(1) = 30

A×B = -5i + 11j -2k

(Click the image for explanation of cross product.)