Question

Find a vector which is parallel to 2i+3j+k and has a magnitude 15​

Answer 1

v=2i+3j+k x=15

unit vector v=2i+3j+k/root of 2 raise to 2+3 raise to 2+1 raise to 2

2i+3j+k/root 14

Parallel vector =15×2i+3j+k/root 14

=15root14×2i+3j+k