y= g'(x) y=g"(x) 15 10- 5. 20- 15- y 10 5 x 6 X a) Determine: i. the intervals where g(x) is increasing; ii. the intervals where g(x) is decreasing; iii. the x-coordinate for the point of inflection; iv. the intervals of concavity; v. the x-coordinate for all local extrema of g(x