Question

if v1=(2,4) and v2=(-1,5) then v1*v2 is equal to which of the following
a.)22
b)(-2,20)
c)18
d)(8,-5)

Answer 1

you would multiply both x components by one another, and then both y and have a vector answer. so 2*-1 =-2 and then 5*4 = 20 so (-2,20) answer B