TI-83_TI-86_and_TI-89 - Essentials for the TI-83+ Special...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Essentials for the TI-83+ 1 Essentials for the TI-83+ Special Keys. y Press and release, then press the appropriate key to access the 2nd (yellow) operation. ± Press and release to access characters and letters indicated above the keys. The sequence y ± sets the ALPHA-lock. ¿ Stores answers, matrices, quantities, etc. into variable names y [ The calculator will display your last entry. To recall the last entry you press y [ , to recall the second to last entry press: y [ y [ , and so on. y Z The calculator will display the last answer. ² Í Displays the last answer in fractions, if possible. Entering Matrices. There are several ways to enter matrices in the TI-83+. One method consists of entering the matrix directly as an expression, while another method is through the use of the matrix editor found in the y ² [EDIT] menu. Below are examples that illustrate the creation of matrices and vectors using these methods. On the TI-83+, a (column) vector is simply an n × 1 column matrix. For additional information, consult the TI-83+ Guidebook. Direct Entry. Begin a matrix with a square bracket, and each row of the matrix with a matching pair of square brackets; separate the entries in the rows with commas. Figure 1 below shows how you can enter the matrix 123 456 é ë ê ù û ú directly and assign to it the name [A] from the y ² [EDIT] menu. The symbol ! appears after pressing the ¿ key. Figure 1: [A] entered directly. The Matrix Editor. Press y ² [EDIT] . The editor allows you to create a matrix by specifying a variable name, a size—row size and column size—and the entries of the matrix. After choosing [EDIT], a screen such as Figure 2 (on the following page) will appear. Select a name by pressing Í on a particular matrix, input rows, columns, and entries, your screen should be similar to Figure 3 (on the following page). To view the matrix from the home screen, press y 5 to return home, and then choose y ² and select the matrix. You can create vectors in a similar fashion. Simply enter vectors in as n × 1 column matrices.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Essentials for the TI-83+ 2 Figure 2: Matrix, edit menu Figure 3: Matrix editor Commands and Operations. The TI-83+ calculator contains powerful built-in commands for linear algebra. Before you use them, however, you need to understand how and why they work. These commands and operations will be introduced in the projects as they are needed. The TI-83+ Guidebook describes each of these commands. You will use the à , ¹ , ¯ , and ¥ keys to perform the algebraic operations of addition, subtraction, multiplication and division, on numbers . Some of these operations can also be done on matrices, but remember that the size of matrices play a major role in the definition of these operations. To add (or subtract) two matrices of the same size, A and B, you enter A + B (or A – B) followed by the Í key.
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 09/16/2009 for the course MATH 220 taught by Professor Lewis during the Fall '08 term at Washington State University .

Page1 / 12

TI-83_TI-86_and_TI-89 - Essentials for the TI-83+ Special...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online