funtool app is a visual function calculator that
manipulates and displays functions of one variable. At the click of a button, for example,
funtool draws a graph representing the sum, product, difference, or ratio
of two functions that you specify.
funtool includes a function memory that
allows you to store functions for later retrieval.
Open the funtool App
funtool displays graphs of a pair of functions,
f(x) = x and
g(x) = 1. The graphs plot the functions
over the domain
funtool also displays a
control panel that lets you save, retrieve, redefine, combine, and transform
The top of the control panel contains a group of editable text fields.
Displays a symbolic expression representing
|Displays a symbolic expression representing
g. Edit this
field to redefine
Displays the domain used to plot
Displays a constant factor used to modify
reflect any changes you make to the contents of the control panel's text fields.
The bottom part of the control panel contains an array of buttons that transform
f and perform other operations.
The first row of control buttons replaces
f with various
Simplified form of
The operators int f and finv can fail if the corresponding symbolic expressions do not exist in closed form.
The second row of buttons translates and scales
The first four buttons of the third row replace
The remaining buttons on the third row interchange
The first three buttons in the fourth row allow you to store and retrieve functions from the calculator's function memory.
The other four buttons on the fourth row perform miscellaneous functions:
Display Quadratic Function and Its Derivative
Display a quadratic function by editing the text field
x^2 + 2*x + 1. Plot the quadratic function within the interval
Click df/dx to find the derivative of the quadratic function.
Introduced before R2006a