pts) Given the vectors = (1,1,4), (0,1,-1) and (-1,2,2) in R3, find (a) the vector that satisfies the equation -20-x-5 -6-4+30 (b) the scalar product ü-ü (c) the vector product uxw (d) a vector i with the same direction and opposite direction to the vector u and modulus equal to 2. (e) a vector z simultaneously orthogonal to the vectors u and w. (f) the angle between the vectors u and (g) the area of the triangle determined by the vectors u