A non-zero vector is multiplied by the scalar to give
MATHEMATICS · Single correct · AP · AP Precalculus · Functions with Parameters, Vectors, and Matrices · Functions with Parameters, Vectors, and Matrices
Problem
A non-zero vector A is multiplied by the scalar 3 to give 3A. Which one of the following statements about the unit vector along 3A is correct?
(a) Its magnitude becomes one-third of the original.
(b) Its direction becomes opposite to that of A.
(c) It is the same as the unit vector along A.
(d) Its magnitude becomes three times larger than before.