CSCE 121 Chapter 15

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Graphing Functions

Function f(func, x_min, x_max, origin, n_points, x_scale, y_scale);

split x_min and x_max into n_points evenly-spaced points, evaluate the function at each of those points, and connect the dots with straight lines to approximate the graph.

x_scale and y_scale: multiply the corresponding x and y of each point to make the graph bigger or smaller

Providing Default Values

Reduce number of arguments:

Function(Fct func, double x_min, double x_max, Point origin, int n_points = 100, double x_scale = 25, double y_scale = 25) { /* ... */ }

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Lots of mathematical goodness!

• trig functions
• exponentials and logarithms
• hyperbolic functions