Function Grapher and Calculator

Description :: All Functions

Description

Function Grapher is a full featured Graphing Utility that supports graphing two functions together.

It has the unique feature that you can save your work as a URL (website link).

Usage

To plot a function just type it into the function box.

Use "x" as the variable, or choose your own letter, then press the Plot button.

Examples:

  • sin(x)
  • 2x-3
  • cos(x^2)
  • (x-3)(x+3)

You can use the "Calculate" button to see how your formula has been interpreted.

Zooming and Re-centering

To zoom into an area, select an area with the mouse (click, hold down and drag, then release). The area you selected will be the new bounds. This will result in the x and y scales being different.

If you just click-and-release (without creating a rectangle), then the spot you clicked on will be the new center

You can zoom out using the Out 2X or Out 10x button.

To reset the zoom to the original bounds 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.

You can change the smallest and largest value of "a" by changing the numbers at the start end end of the slider.

 

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.
  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

 

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