Texas Instruments TINSPIRE Teacher Software Guidebook - Page 426

Now you can use the new velocity unit _fpm. Creating user-defined functions and programs You can use the Define command to create your own functions and programs. You can create them in the Calculator application or in the Program Editor and then use them in other TI-Nspire™ applications. For information on programming with the Program Editor, see the "Programming" and "Libraries" sections of the documentation. Defining a single-line function Suppose you want to define a function named cube() that calculates the cube of a number or variable. 1. On the Calculator entry line, type Define cube(x)=x^3 and press ·. The message "Done" confirms that the function has been defined. 2. Type cube(2) and press · to test the function. Defining a multiple-line function using templates You can define a function consisting of multiple statements entered on separate lines. A multiple-line function may be easier to read than one with multiple statements separated by colons. Note: You can create multiple-line functions only by using the Define command. You cannot use the := or & operators to create multiple-line definitions. The Func...EndFunc template serves as a container for the statements. As an example, define a function named g(x,y) that compares two arguments x and y. If argument x > argument y, the function should return the value of x. Otherwise, it should return the value of y. 414 Calculator