Graphing Calculator

Graphing Calculator
Graphing Calculator

Plot Your Functions

Use ‘x’ as the variable. Supported: `sin()`, `cos()`, `tan()`, `log()`, `ln()`, `sqrt()`, `abs()`, `round()`, `ceil()`, `floor()`, `PI`, `E`, `^` (for power), `*`, `/`, `+`, `-`.

How to Use This Graphing Calculator

This tool allows you to visualize mathematical functions by plotting them on a Cartesian coordinate system. You can interact with the graph by zooming and panning.

Entering Functions

  • Input Field: Type your mathematical function into the “Enter Function” input field.
  • Variable: Always use `x` as your independent variable (e.g., `sin(x)`, `x^2 + 2*x`).
  • Operators: Use `+` (add), `-` (subtract), `*` (multiply), `/` (divide), `^` (for power, which converts to `**` internally).
  • Functions:
    • Trigonometric: `sin(x)`, `cos(x)`, `tan(x)` (angles are in radians).
    • Logarithmic: `log(x)` (base 10), `ln(x)` (natural logarithm, base e).
    • Other Math: `sqrt(x)` (square root), `abs(x)` (absolute value), `round(x)`, `ceil(x)`, `floor(x)`.
  • Constants: `PI` (for π ≈ 3.14159), `E` (for e ≈ 2.71828).
  • Buttons: Use the provided buttons below the input field to easily insert functions, operators, and constants.
  • Plot: Click the “Plot” button to draw your function on the graph.

Interactive Graphing

  • Zoom In/Out: Use the “Zoom In” and “Zoom Out” buttons to adjust the graph’s scale.
  • Pan (Drag): Click and drag your mouse on the graph canvas to move the view.
  • Reset View: Click the “Reset View” button to return to the default zoom and pan settings.
  • Error Display: If your function has a syntax error or results in an invalid calculation, an error message will appear below the plot area.

Note: This calculator is best experienced on desktop browsers that support modern web graphics capabilities for smooth interaction.

GRAPHING CALCULATOR – FULL FEATURE DETAILS

A Graphing Calculator plots mathematical functions on a graph in real time. It’s interactive, visual, and powerful — often used in algebra, calculus, trigonometry, and advanced math.

1. Core Functionalities

Feature Description
🧮 Function Input User can enter any function like `y = sin(x)`, `y = x^2`, `y = log(x)`.
📈 Graph Display Graphs are plotted in real-time as users type.
🔁 Multiple Functions Plot multiple functions on one graph (like `y = x`, `y = x^2`, etc.).
(Note: Current version supports one function input at a time. This feature can be added in future updates.)
🔍 Zoom In/Out Zoom in or out for better analysis.
🧭 Pan Graph Drag the graph to move across axes.
🎚 Adjust Axes Custom range for X and Y axes (min/max values).
(Note: Current version adjusts dynamically with zoom/pan. Manual input for ranges can be added in future updates.)
✨ Color Coding Each function is shown in a different color.
(Note: Current version plots a single function in blue. Color coding for multiple functions can be added in future updates.)
🧮 Trace Mode Move cursor along the curve to inspect values.
(Note: This feature is not implemented in the current version and can be added in future updates.)

2. Supported Mathematical Functions

Type of Function Examples
Linear `y = mx + b`, `y = 2x + 3`
Quadratic `y = x^2`, `y = ax^2 + bx + c`
Polynomial `y = x^3 – 4x + 2`
Trigonometric `y = sin(x)`, `cos(x)`, `tan(x)`
Exponential `y = e^x`, `y = 2^x`
Logarithmic `y = log(x)` (base 10), `ln(x)` (natural log)
Absolute Value `y = abs(x)`
Piecewise (Advanced) `y = x < 0 ? -x : x`
(Note: Piecewise functions require JavaScript ternary operator syntax for evaluation and can be complex to input directly. The current `evaluateFunction` uses `new Function()` which technically supports this, but user input might need specific guidance.)

4. Device Compatibility

Device Support
✅ Desktop Fully supported with zoom/pan and full features.
✅ Mobile Basic graphing support (some features limited).
✅ Tablet Full support.

🔔 Note: Best performance on modern browsers like Chrome, Firefox, Edge that support WebGL.

5. Interactive Graph UI Features

  • 🔹 Gridlines: Always displayed. (Optional toggle can be added in future updates.)
  • 🔹 Axis labels: With numerical values. (Real-time value tracking on hover/trace mode not implemented.)
  • 🔹 Hover to get (x, y) values: Not implemented.
  • 🔹 Click to mark points: Not implemented.
  • 🔹 Drag axes to reposition graph: Supported (Pan functionality).
  • 🔹 Resizable canvas: Supported (adjusts on window resize).

💡 Optional Add-Ons (Future Enhancements)

  • 🧮 Scientific Calculator Mode: This is a separate application that can be integrated or linked.
  • 📤 Download Graph as Image (PNG): **Implemented!** Use the “Download PNG” button.
  • 🧾 Export function table (CSV): **Implemented!** Use the “Export CSV” button.
  • 🕳 Dark Mode toggle: Can be added in future updates.