Question

cross product : (-1, 3, 5) and (0, a , 1)

Answer 1

Evaluate the determinant of
\[\begin{bmatrix}
\mathbf{i} & \mathbf{j} & \mathbf{k}\\
-1 & 3 &5 \\
0 &a &1
\end{bmatrix}\]

Answer 2

(3-5a, 1, -a )

Answer 3

i have to solve for 'a', how do i do that ?

Answer 4

Isn't there any other given information?

Answer 5

nope that is it

Answer 6

Oh yes ! you're right

Answer 7

(12, 1, 12) that's the answer
okay i know what to do from here, thank you !

Answer 8

Np.