Question

find the specified vector or scalar. show your work. u = -4i + 1j and v = 4i + 1j; find ‖u+v‖.

Answer 1

the || around a vector asks for its magnitude

you know it's a vector because it is broken into I,J,K form

to add vectors you add the I's together, the J's together, and the K's together

then you use the Pythagorean theorem to solve for the magnitude

Answer 2

0i + 2j

Answer 3

@caominhim

Answer 4

correct, now use Pythagorean theorem for magnitude

Answer 5

0^2 + 2^2 =4
magnitude = 2?
@caominhim

Answer 6

yep