STUDEN ID: QUESTION 1 Given a function tle)= x2 * x2 +28+ -X - 2x +4. i) Find the y-intercept of f. (1 mark) i) Find the critical points of f. (4 marks) ii) Find the interval(s) where f is increasing and decreasing. Hence, determine the relative extremum of f (if any). (4 marks) iv) Find the interval(s) where f is concave up and concave down. Hence, determine the inflection point of f (if any) (4 marks) V) Sketch the graph of f using the above information (2 marks)