Inequality Grapher

../algebra/images/inequal-graph.js

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)

Zooming and Re-centering

To zoom, use the zoom slider. To the left zooms in, to the 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 is 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.

All Functions

Operators

	+	Addition operator
	-	Subtraction operator
	*	Multiplication operator
	/	Division operator
	^	Exponent (Power) operator

Functions

	sqrt	Square Root of a value or expression.
	sin	sine of a value or expression
	cos	cosine of a value or expression
	tan	tangent of a value or expression
	asin	inverse sine (arcsine) of a value or expression
	acos	inverse cosine (arccos) of a value or expression
	atan	inverse tangent (arctangent) of a value or expression
	sinh	Hyperbolic sine (sinh) of a value or expression
	cosh	Hyperbolic cosine (cosh) of a value or expression
	tanh	Hyperbolic tangent (tanh) of a value or expression
	exp	e (the Euler Constant) raised to the power of a value or expression
	ln	The natural logarithm of a value or expression
	log	The base−10 logarithm of a value or expression
	floor	Returns the largest (closest to positive infinity) value that is not greater than the argument and is equal to a mathematical integer.
	ceil	Returns the smallest (closest to negative infinity) value that is not less than the argument and is equal to a mathematical integer.
	round	Round to the nearest integer. Examples: round(−2.5) = −2, round(-0.1) = 0, round(0.1) = 0, round(2.5) = 3
	abs	Absolute value (distance from zero) of a value or expression
	sign	Sign (+1 or −1) of a value or expression

Constants

	pi	The constant π (3.141592654...)
	e	Euler's number (2.71828...), the base for the natural logarithm