Here is a program written by Tom Bingel you can type in to graph complex equations such as trigonometric and polynomial functions. The plots are printed on the screen and on the printer if you have one.
Note that programs with great curvature (that changes values rapidly) may not be reproduced accurately by the computer due to its limited graphics ability.
Due to the inability of the ROM to handle powers of negative numbers, a special routine is added to compensate for this inadequacy. However, there are some rules for expressing the function f(x):
- f(x) must have all variables in terms of x. Examples: 3*X+2; 7*X**3-X**2+1
- Exponents (powers of X) must be positive integers not greater than 9. Use 1/X for negative exponents.