Plot-function-graphs

A small Python program for rendering text-based function graphs in the console.

Prerequisites

• Python 3.8 or later
• No external dependencies required (uses the standard library only)

Run the project

1. Open a terminal.
2. Change to the project directory:

   cd /path/to/Plot-function-graphs

3. Run the script:

   python draw.py

Usage

When you run draw.py, the program will prompt you for:

• Enter a function f(x) = — a math expression in terms of x
• Enter domain start: — integer start value for the x domain
• Enter domain end: — integer end value for the x domain
• Enter x axis scale: — numeric scale factor for x values
• Enter y axis scale: — numeric scale factor for y values

The program accepts expressions such as:

• x^2
• sin(x)
• cos(x)
• sqrt(x)
• abs(x)
• fact(x)
• gamma(x)

Example

Enter a function f(x) = x^2
Enter domain start: -2
Enter domain end: 2
Enter x axis scale: 5
Enter y axis scale: 5

The script will then print a text-based graph using * for points and | / - for the axes.

Notes

• Use Python-style function notation where needed.
• Multiplication is inferred in many cases, but explicit * can improve reliability.
• If parentheses are mismatched or unsupported characters are used, the program will ask you to correct the function format.