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### Evaluate a Definite Integral with the TI-84 Plus

You can use the option on the Calculate menu of the TI84 graphing calculator to find the value of a definite integral of a function. If *f*(*x*) is positive for [more…]

### Find the Slope of a Curve with the TI-84 Plus

The TI84 graphing calculator is not equipped to find the derivative of a function. For example, it cannot tell you that the derivative of *x*^{2} is 2*x*. But the calculator is equipped with a numerical routine [more…]

### How to Enter Functions on the TI-84 Plus

Before you can graph a function, you must enter it into the TI-84 Plus graphing calculator. The calculator can handle up to ten functions at once, **Y**** _{1}** through [more…]

### How to Find Points of Intersection on the TI-84 Plus

You can use the TI-84 Plus graphing calculator to find the points intersection of two graphs. Locating the point of intersection of two graphs with the arrow keys gives you an [more…]

### How to Graph Functions on the TI-84 Plus

After you have entered functions into the TI-84 Plus graphing calculator, the calculator has a variety of features that help you painlessly graph a function as well. [more…]

### Format Menu Options on the TI-84 Plus

When you are creating a graph on the TI-84 Plus graphing calculator, you must select the format for the graph from the options on the Format menu. In the Format menu, each line of the menu will have one [more…]

### How to Graph Several Functions on the TI-84 Plus

If you’re graphing several functions at once on the TI-84 Plus graphing calculator, it’s not easy to determine which graph each function is responsible for. To help clear this up, the calculator allows [more…]

### How to Graph Piecewise-Defined Functions on the TI-84 Plus

When graphing a piecewise-defined function on the TI-84 Plus graphing calculator, some people cop out and simply graph each of the separate functions that appear in it. But this does not result in an accurate [more…]

### How to Graph Trig Functions on the TI-84 Plus

The TI-84 Plus graphing calculator has built-in features especially designed for graphing trigonometric functions. It produces graphs that look like graphs you see in text books; and when you trace these [more…]

### View Function and Graph on Same TI-84 Plus Screen

If you’re planning to play around with the definition of a function you’re graphing on the TI-84 Plus graphing calculator, it’s quite handy to have both the Y [more…]

### Save and Recall a Graph on the TI-84 Plus

If you want to save your graph as a Graph Database on the TI-84 Plus graphing calculator, when you recall the graph at a later time, the graph remains interactive. This means that you can, for example, [more…]

### ZStandard, ZDecimal, and ZTrig Zoom Commands on the TI-84 Plus

The **ZStandard**, **ZDecimal**, and **ZTrig** Zoom commands on the TI-84 Plus graphing calculator help you to initially graph or regraph your function in a preset viewing window. [more…]

### ZoomFit, ZoomStat, ZSquare, and ZInteger Commands on the TI-84 Plus

Zooming on the TI-84 Plus allows you to quickly adjust the viewing window for the graph so that you can get a better idea of the nature of the graph. The [more…]

### Zoom In, Zoom Out, and ZBox Commands on the TI-84 Plus

The TI-84 Plus graphing calculator offers several methods of zooming. The **Zoom In**, **Zoom Out**, and **ZBox**commands enable you to zoom in or zoom out from an already graphed function. [more…]

### How to Trace a Graph on the TI-84 Plus

Tracing a graph on the TI-84 Plus graphing calculator shows you the coordinates of the points that make up the graph. After you have graphed your function, you can press [more…]

### How to View TI-84 Plus Tables and Graphs on Same Screen

After you have graphed your functions and created a table of functional values on the TI-84 Plus graphing calculator, you can view the graph and the table on the same screen. [more…]

### How to Find the Zeroes of a Function with the TI-84 Plus

You can use the TI-84 Plus graphing calculator to find the zeroes of a function. The *zeros* of the function *y* = *f*(*x*) are the solutions to the equation *f* [more…]

### How to Find the Minimum and Maximum Points on a Graph

You can use the TI-84 Plus graphing calculator to find the minimum and maximum points on a graph. Finding the maximum or minimum point on a graph has many useful applications. For example, the maximum [more…]

### How to Display Functions in a Table on the TI-84 Plus

After you’ve entered the functions in the Y=, you can have the TI-84 Plus graphing calculator create a table of functional values.

To create a table, perform the following steps: [more…]

### How to Store Data Points in Inequality Graphing

When you start Inequality Graphing on the TI-84 Plus for the first time, the application creates two lists, INEQX and INEQY, to house the *x*- and *y*-coordinates of data points that you store in the calculator [more…]

### How to Solve Linear Programming Problems on the TI-84 Plus

You can use Inequality Graphing on the TI-84 Plus to solve linear programming problems. *Linear programming* is a method for finding the maximum or minimum value of a multivariable function that is constrained [more…]

### How to Graph Inequalities on the TI-84 Plus

As with functions, if the inequality sign in the definition of the inequality is highlighted in Inequality Graphing on the TI-84 Plus, then that inequality will be graphed; if it isn’t highlighted, it [more…]

### How to Shade Graph Unions and Intersections

When a graph is displayed in Inequality Graphing on the TI-84 Plus calculator, **Shades** is one of three options that appear at the bottom of the screen. The [more…]

### How to Finding the Points of Intersection

When a graph is displayed in Inequality Graphing on the TI-84 Plus calculator, **Pol-Trace** is one of three options that appear at the bottom of the screen. The [more…]

### How to Create Accurate Graphs on the TI-84 Plus

The TI-84 Plus graphing calculator can do only what you tell it to do — which doesn’t always produce an accurate graph. Following are the three main causes of inaccurate graphs, and their solutions: [more…]