How to sketch a cubic function
- Determine intersections with the x and y axis, intersections at x axis occur when y=0 and intersections with the y axis occur when x=0.2) Differentiate function to find stationary points (by setting the differential to 0 as the gradient of the function at a stationary point=0) and the nature of the stationary points.3) Mark all of these points on your axes and sketch the function (depending on whether it is positive or negative).
AP
