Question

For what values of b are the vectors <-6,b,2> and orthogonal?

Answer 1

We use the dot product?

Answer 2

dot product has to be 0. calculate the dot product and set it equal to 0. you'll get a polynomial

Answer 3

wait a min no!

Answer 4

oh okay

Answer 5

yes

Answer 6

3 values of b will work

Answer 7

2 if you exclude the trivial one, b = 0

Answer 8

we don't get a polynomial... I get -6b+b^3+2b

Answer 9

that's a polynomial in b.

Answer 10

ah i see

Answer 11

b=2

Answer 12

or

Answer 13

b=0

Answer 14

1 more

Answer 15

+ or - 2

Answer 16

yep

Answer 17

thanks

Answer 18

you're welcome