Quick Start Guide

48 Quick Start Guide

User menu

The User menu lists user-defined functions and programs. For example, using the

Define feature (Sc) you can define your own functions. The name you give to a

function will appear on the User menu. You could, for instance, create the function

SIN(X)+COS(Y) and name it SINCOS. SINCOS will then appear on the User menu. If

you choose it, SINCOS() will appear at the position of the cursor. You then enter the

arguments you specified when creating the function. Thus SINCOS(0.5,0.75) will

yield 1.2111… (if your angle measure setting is radians).

Programs you create using the calculator’s programming language are also listed on

the User menu if you have made them global (by using the

EXPORT command). Just as

you can evaluate a user-defined function by first selecting it from the User menu, you can also run a program by selecting it

from the User menu.

Catalog Menu (Catlg)

The Toolbox key also gives you access to a menu of every command and function

available on the HP Prime calculator. Tap and tap the command or function

you want. It is copied to the location of the cursor.

There are over 400 commands and functions on this menu. You may find it easier to

select an item by entering the first few letters of its name. The menu automatically

scrolls to the first command whose name matches the letters you entered. For

example, suppose you want to find the number of positive integers not greater than

and coprime to 200. Euler’s totient function is a quick way of finding that number, and

the function is available on the Catlg menu.

1. Press b (and tap if necessary).

2. Enter eu. Notice that the menu immediately scrolls to euler.

3. Select euler, enter 200 between the parentheses, and press E. The result is 80.

Catalogs and Editors

The HP Prime calculator provides a number of handy catalogs where you can store the lists, matrices, programs, and notes

you create. Each of these catalogs has an editor to help you quickly create and modify a list, matrix, program, or note. Like

apps, the items you add to a catalog can be sent to another HP Prime calculator using the supplied USB cable (see “Data

sharing” on page 19).