[3] 5. Determine the exact value of the minimum or maximum of y = x Inx. Do not leave your answer with negative exponents. 6. A rocket takes off vertically towards space. A camera that tilts is located horizontally on the ground 2,000 meters from where the rocket is taking off is. It is following the rocket. If the rocket travels at a speed of 500 m/s when it reaches an altitude of 4,000 meters, determine the rate of change of the angle of elevation of the camera. [3]