# TI-83 Graphing Calculator

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### Convert from Rectangular to Polar Coordinates on the TI-83 Plus

You’re used to seeing points in the xy-plane displayed in the (x, y) rectangular form. But when dealing with polar equations, you view these points in their polar form. To convert

### Convert from Radian Measure to Fractions on the TI-83 Plus

You can use the TI-83 Plus graphing calculator to express radian measures as a fraction, if possible. It’s much easier to know what the angle looks like in this form. You can quickly sketch the angle

### Convert from Polar to Rectangular Coordinates on the TI-83 Plus

You can use the TI-83 Plus graphing calculator to convert from polar to rectangular coordinates. You’re used to seeing points in the xy-plane displayed in the

### How to Enter Polar Equations on the TI-83 Plus

The TI-83 Plus graphing calculator can handle up to six polar equations, r1 through r6. To enter polar equations in the calculator, follow these steps:

### TI-83 Plus Window Editor in Polar Mode

You must set several variables in the Window editor of the TI-83 Plus graphing calculator when the calculator is in Polar mode. The following gives an explanation of the variables that you must set in

### How to Graph Polar Equations on the TI-83 Plus

After you’ve entered the polar equations into the TI-83 Plus graphing calculator, you can use the following steps to graph the equations. The first line in the Y

### Error Messages on the TI-83 Plus

When working on the TI-83 Plus graphing calculator, you are likely to encounter the following common error messages if you make mistakes when entering equations, formulas, or data.

### View Polar Equation Table and Graph on the Same TI-83 Screen

After you’ve graphed your polar equations and created a table for the polar equations on the TI-83 Plus graphing calculator, you can view the graph and the table on the same screen. To do so, follow these

### Evaluate Polar Expressions on the TI-83 Plus

You can use the TI-83 Plus graphing calculator to evaluate polar expressions that you have entered and graphed. To evaluate polar equations at a specified value of

### Find Derivatives of Polar Equations with the TI-83 Plus

You can use the TI-83 Plus graphing calculator to find derivatives of polar equations. To find the derivative of a polar equation at a specified value of

### Permutations, Combinations, and Random Numbers on the TI-83 Plus

You can use the TI-83 Plus to evaluate a permutation or combination. A permutation, denoted by nPr, answers the question: “From a set of n different items, how many ways can you select

### How to Enter Statistical Data on the TI-83 Plus

What you use to enter statistical data into the TI-83 Plus graphing calculator is the Stat List editor — a relatively large spreadsheet that can accommodate up to 20 columns

### Delete and Edit Statistical Data on the TI-83 Plus

Sooner or later you’ll have to remove or modify the data that you’ve placed in a data list on the TI-83 Plus graphing calculator. The following list shows you how to do so.

### Create User-Named Data Lists on the TI-83 Plus

You can use the TI-83 Plus graphing calculator to create user-named data lists. To name a data list in the Stat List editor, follow these steps:

### Use Formulas to Enter Data in the TI-83 Plus

You can use the TI-83 Plus graphing calculator to enter data with formulas. The figure illustrates how you would place the sequence 10, 20, . . ., 200 in list

### Save and Recall Data Lists on the TI-83 Plus

Saving your data lists on the TI-83 Plus graphing calculator is the first step in the direction of calling them up again when you want to use or change them. The following list shows you how to do so:

### How to Sort Data Lists on the TI-83 Plus

You can use the TI-83 Plus graphing calculator to sort your statistical data that appears on your data lists. To sort data lists, follow these steps:

### How to Constructing a Box Plot on the TI-83 Plus

You can use the TI-83 Plus graphing calculator to construct a box plot of the data you have entered. To construct a box plot of your data, follow these steps:

### Plot Two-Variable Data on the TI-83 Plus

You can use the TI-83 Plus graphing calculator to plot two-variable data. The most common plots used to graph two-variable data sets are the scatter plot

### Trace Statistical Data Plots on the TI-83 Plus

Before tracing a statistical data plot on the TI-83 Plus, press [2nd][ZOOM] and, if necessary, highlight the CoordOnin the second line of the Format menu and highlight

### Analyze One-Variable Statistical Data on the TI-83 Plus

The TI-83 Plus graphing calculator can perform one- and two-variable statistical data analysis. For one-variable data analysis, the statistical data variable is denoted by

### Analyze Two-Variable Statistical Data on the TI-83 Plus

The TI-83 Plus graphing calculator can perform one- and two-variable statistical data analysis. For two-variable data analysis, the data variable for the first data list is denoted by

### Compute a Regression Model on the TI-83 Plus

Regression modeling is the process of finding a function that approximates the relationship between the two variables in two data lists. To compute a regression model for your two-variable data on the

### How to Define a Matrix on the TI-83 Plus

You can define up to ten matrices on the TI-83 Plus graphing calculator. Each matrix can have dimensions of up to 99 X 99 and can contain only real-number entries.

### Edit, Display, and Augment Matrices on the TI-83 Plus

After you have defined matrices on the TI-83 Plus graphing calculator, you might need to edit them, display them on the Home screen, or append one matrix to another. The calculator allows you to define

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