let u=5i-j+k
v=j-5k
w=-15+3j-3k
which vectors, if any, are a. perpendicular and b. parallel
a. i don't know how to find if they are perpendicular or not
b. i think the vectors are parallel if u x v = 0
and then i did the cross products of vector u and w and that cross product is 0, so u and w are parallel
v=j-5k
w=-15+3j-3k
which vectors, if any, are a. perpendicular and b. parallel
a. i don't know how to find if they are perpendicular or not
b. i think the vectors are parallel if u x v = 0
and then i did the cross products of vector u and w and that cross product is 0, so u and w are parallel