Question

For what values of k if any are vector u and v orthogonal?

Answer 1

a) u = (2,k,k) and v=(1, 7 , k)

Answer 2

and when u= (k,k,1) and v=(k,5,6)

Answer 3

a) u.v = 0
2*1 + 7*k + k*k = 0

b) u.v = 0
k * k + 5 * k + 1 * 6 = 0

Answer 4

Yeah I can't get a definite answer I got htat too

Answer 5

unless I use the quadratic formula but then I get decimals is that allowed?