Example Applets
These examples are limited to 50 parses.
Simply reload the page to reset the applets. This limitation
is not present in the full version of the product.
Function Plotter
Type a mathematical expression into the top line. The graph
of the function of x will be plotted below. Note that the
scaling is 1:1.
The plotting of the curve does not require the equation to
be parsed for each point. Instead, the parser "remembers"
the structure of the expression and reevaluates for different
values of x. This causes a significant speed increase compared
to parsing the expression for each point.
Try using constants (pi and e) and common functions (sin(x),
cos(x), tan(x), asin(x)...) in your expressions to test the
built-in variables and functions.
Some sample expressions you can try:
- 80 e^(-((x/40)^2))
- 20 ln(x/10)
- 10 tan(x/30)
- x^3 / 1e4
- 50 sin(x/20)
- 50 sin(x/10)*(sin(x/10) > 0)
Source Code
FunctionPlotter.java
GraphCanvas.java
Expression Evaluator
This applet allows you to evaluate expressions containing
the variable "x". Enter an expression and change
the value of x. The result will be automatically updated.
Try entering complex numbers by using the built-in constant
"i" as the imaginary unit (square root of -1).
Source Code
Evaluator.java
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