Graphing Calculator
Plot mathematical functions and evaluate them at specific x values. Supports polynomials, trigonometric, exponential, and logarithmic functions.
Published by:
isCalculator Editorial Team
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How to use this tool?
How to Use the Graphing Calculator
- Enter a function in the f(x) = field. Use
^for exponents (e.g.,x^2 + 2*x + 1). Supported operations:+,-,*,/,^,sin,cos,tan,log,exp,sqrt, and constantspiore. - Set the viewing window by entering X min, X max, Y min, and Y max values. Ensure min values are less than max values.
- Evaluate at a point (optional): Enter a number in the Evaluate f(x) at x = field to see the function's value at that x.
- Click "Plot & Evaluate" to draw the graph and see the evaluation result below.
- Interpret results: The graph shows the function curve in blue. The evaluation result displays as
f(x) = value. If the function is undefined at that point, an error message appears.
Tips: Use * for multiplication (e.g., 2*x). All inputs accept decimal numbers. The graph auto-scales to your window settings. Errors (e.g., invalid syntax or division by zero) appear in red.
Previous Results
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Frequently Asked Questions
You can graph polynomials, trigonometric (sin, cos, tan), exponential (exp), logarithmic (log), and combinations using +, -, *, /, ^, and parentheses.
Use the caret symbol ^, e.g., x^2 for x squared.
Ensure your function is valid and that the axes ranges include the function's values. Check for syntax errors like missing parentheses.
