Determine whether the vectors a and b are parallel, orthogonal or neither for the given a and b. a. a = <1, 2, 3> and b = <5, -1, -1> b. a = <1, 2, 3> and b = <4, 8, 12> c. a = <1, 2, 3> and b = <2, 4, 3> 3. Find the cross product u X v when u = <0, 1, 1> and v = <1, 0, 1>.