Using the graph of the function $ƒ(x) = x^3 - x + 1$.
i. Find approximate x values for any local maximum or local minimum points.
ii. Set up a table showing intervals of increase or decrease and the slope of the tangent on those intervals.
iii. Set up a table of values showing "x" and its corresponding “slope of tangent” for at least 7 points
iv. Sketch the graph of the derivative using the table of values from (iii)
I am done up to ii, now how would I do (iii)? Do i just enter the values that make the slope of tangent zero and that would be only one value. What else can I put.