If you change any coefficients of the polynomial function while Auto-Draw is enabled, the polynomial calculator will automatically graph the new polynomial function. It is clear form the example above that some coefficients of the polynomial function have non-zero imaginary part. This will make the curve representing the imaginary part (green curve) of the function calculation to change, since its value is not always zero anymore.
You should notice that there are cyan colored curve near the red one. This curve represent the magnitude of the function calculation result, which is the Phytagorean distance from the complex number's real part and imaginary part.
If you need to save the graph, click the button with diskette on it. You can use the image for your school reports, teaching materials and anything else you might need to do.
If you want to show how to capture the complex roots of a polynomial function, you may need to look at the next tutorial.