Specification References: N6.8h N6.8h Draw, sketch, recognise graphs of simple cubic functions, the reciprocal function with , the function for integer values of and simple positive values of , the circular functions and . |
Candidates would be expected to recognise a sketch of the cubic, for example, y = x3, and reciprocal graphs (including negative values of x). They would also be expected to sketch a graph of y = sin x, and y = cos x between - and 360o, and know that the maximum and minimum values for sin and cos are 1 and –1. They would also be expected to know that the graphs of sin and cos are periodic.
If candidates are required to draw an exponential graph, for example, y = 2x, , then a table will be given in which some y values may have to be calculated. Graphs are expected to be drawn as a curve. Joining points with straight lines will not get full credit.