Level:
Project ID:
9000100709
Accepted:
1
Clonable:
1
Easy:
0
Find the value of the parameter \(z\)
so that the vector \(\vec{w} = (8;2;z)\)
is perpendicular to the vectors \(\vec{a} = (1;2;-3)\)
and \(\vec{b} = (-1;2;1)\).
\(z = 4\)
\(z = -12\)
\(z = 2\)
\(z = -4\)