Question

Find the dot product of vectors u = -4i + 7j and v = 2i + j

Answer 1

The desired dot product is -1

Explanation:

To find the dot product of the given vectors, multiply the magnitudes of the 'i' and 'j' terms together, separately, and then add the results:

dot product of u and v = (-4)(2) + (7)(1) = -8 + 7 = -1

The desired dot product is -1