Add and plot up to ten functions on one interactive graph. Zoom in or out, drag to move the view, use the Move buttons, or restore the default window. Supports powers, roots, trigonometry, logarithms, and constants like pi and e.
Tool
Up to 10 functions
x: −10 to 10
Drag the graph to move the view. Use Move buttons or Zoom in / Zoom out. Supported: + - * / ^ ( ), sin, cos, tan, asin, acos, atan, sqrt, abs, ln, log, exp, pi, e. Writing 2x or 2sin(x) without * also works.
Explanation
What this tool does
Add and plot up to ten functions on one interactive graph. Zoom in or out, drag to move the view, use the Move buttons, or restore the default window. Supports powers, roots, trigonometry, logarithms, and constants like pi and e.
Example
Plotting y = x^2 and y = 2x + 1 together shows the parabola crossing the line at x = -0.41 and x = 2.41.
When to use it
Use it when you need a fast browser-based utility without uploading your text, files, or other input.
Common mistakes
Writing 2x without multiplication when the parser needs 2*x for clarity in complex expressions.
Setting an x-range so narrow or wide that the interesting part of the curve is off-screen.
Expecting a continuous line through points where the function is undefined.
Frequently asked questions
How do I write a function to plot?
Type the expression using x as the variable, for example x^2, 2*x + 1, sin(x), or sqrt(x). Use ^ for powers, * for multiplication, and parentheses for grouping. Writing 2x instead of 2*x also works.
Which functions are supported?
You can use sin, cos, tan, asin, acos, atan, sqrt, abs, ln, log (base 10), and exp, plus the constants pi and e. Combine them freely, for example sin(x)^2 + cos(x)^2.
Can I plot more than one function at once?
Yes. Add up to ten functions and they are drawn together in different colors, which makes it easy to compare curves and spot intersection points.
How do I move or zoom the graph?
Drag on the graph to pan the view, or use the Move buttons. Zoom in / Zoom out rescale around the current center, and Default view restores x from -10 to 10 with an auto-fitted y range.
Why does part of my graph disappear?
Points where the function is undefined - like dividing by zero or taking the square root of a negative number - are skipped, so the curve breaks there. That gap is mathematically correct.
Is the Graphing Calculator free to use?
Yes. All LearnLinx calculators are completely free with no signup required. Signing in is optional and only adds a 60-day history of your calculations.
