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Quick Start

1. Open HeronTool's Function Plotter.
2. Type a function expression in the input box, e.g., sin(x) or x^2 + 3*x - 1. Common operators, trigonometric, exponential, and logarithmic functions are supported.
3. Click the "Plot" button, and the graph appears instantly on the coordinate grid. The default x-range is -10 to 10, which you can modify.

Adjusting View & Parameters

• In "Range Settings", set min/max values for x and y axes to zoom in/out.
• Use the "Color" option to change the curve color for easy comparison of multiple functions.
• To overlay multiple functions, click "Add Function" and enter a new expression; all curves will display together.

Export & Share

• Click "Export Image" to save the current graph as a PNG file for documents or sharing.
• You can also copy the function expression and reuse it in other HeronTool tools, such as the calculator.

FAQ

Q: No graph appears after entering a function?
A: Check for syntax errors (e.g., missing * for multiplication) and ensure the x-range covers the function's domain.

Q: How to plot implicit functions?
A: The Function Plotter currently supports only explicit functions y=f(x). For implicit functions, use specialized software.

Q: Can I adjust line thickness?
A: Yes, set the line width in the "Style" settings.