PLEASE USING MAPLE AND SCREENSHOT ALL SOLUTION INCLUDING THE WAY YOU WRITE THE QUESTION

Activity 3 : Sketching the graph of a polynomial function Given a function f(x)=x3+6x2+12x+7 a. Find the interval(s) where the function is increasing and/or decreasing. Hence, determine the extremum point(s) b. Find the interval(s) where the function is concave up and/or down. c. Determine the inflection point(s) d. Find the y-intercept e. Sketch the graph of f(x)