Let Q = \((2x-y)a_{x}+(4y+z)a_{y}+(4x-2z)a_{z}\)
(a) Determine a unit vector in the direction of Q at P(1, 2, 1)
(b) Find the component of Q at P in the direction of PT where T is point (5, 3, -4)
(c) Where is Q the same as the unit vector of \(a_{x}+11a_{y}+10a_{z}\)