Given two vectors u and v, the vector in the direction of u with the length of v equals the vector in the direction of v with the length of u. True O False Question 2 The lines r = 3 + t, y = 4 + 2t, z = 2 - t and e = 2t, y = 4t, z = t are parallel. O True O False Question 3 The curve r(t) = is a line that passes through the origin. O True O False Question 4 The unit binormal vector is B(t) = N(t) x T() O True O False