Inequality Grapher
Description
Inequality Grapher is a full featured Graphing Utility that supports graphing multiple functions together, and shading the areas less than or greater than each function.
It can be used to solve sets of inequality questions, and is useful in linear programming.
Usage
To plot a function just type it into the function box. Use "x" as the variable.
Examples:
- sin(x)
- 2x-3
- cos(x^2)
- (x-3)(x+3)
Choosing the Inequality Sign
Next to each formula box, you can choose the sign you want:
- < or > shades the region below or above, using a dashed line (the boundary isn't included)
- ≤ or ≥ shades the region below or above, using a solid line (the boundary is included)
- = just plots the function as a reference line
Zooming and Re-centering
To zoom, use the zoom slider. Left zooms in, right zooms out. When you let go of the slider it goes back to the middle so you can zoom more.
You can click-and-drag to move the graph around.
If you just click-and-release (without moving), then the spot you clicked on will be the new center
To reset the zoom to the original, click on the Reset button.
Using "a" Values
There's a slider with "a=" on it. You can use "a" in your formula and then use the slider to change the value of "a" to see how it affects the graph.
Examples:
- x^a
- 2x-3a
- sin(a*x)
Note how I used a*x to multiply a and x. If I used ax (or xa) the program just gets confused.
Saving Your Work
You can print using the print button.
You can save the graph to disk.