How To Graph Polar On Ti 84?
How to Graph Polar Equations on the TI84 Plus Calculator
The TI84 Plus calculator is a powerful tool that can be used to graph a variety of functions, including polar equations. Polar equations are used to represent curves that are defined in terms of their radius and angle. In this tutorial, we will show you how to graph polar equations on the TI84 Plus calculator.
We will start by discussing the basics of polar coordinates and how to enter them into the calculator. Then, we will show you how to graph a variety of polar equations, including circles, ellipses, and spirals. Finally, we will provide some tips for troubleshooting problems that you may encounter while graphing polar equations.
By the end of this tutorial, you will be able to use the TI84 Plus calculator to graph polar equations with ease. So let’s get started!
Step  Instructions  Example 

1  Press MODE and select POLAR.  
2  Enter the xcoordinate of the pole, followed by the ycoordinate.  
3  Enter the radius of the graph.  
4  Press ENTER to graph the polar equation. 
The TI84 Plus is a graphing calculator that can be used to graph polar equations. Polar equations are equations that express the relationship between the radius and angle of a point in a polar coordinate system. To graph a polar equation on the TI84 Plus, you must first enter the equation in polar coordinates. You can then change the graphing window to view the graph.
Entering Polar Coordinates
To enter polar coordinates on the TI84 Plus, press the MODE button and select POLAR. This will change the calculator to polar mode. You can then enter the rvalue, followed by the value. The rvalue is the distance of the point from the origin, and the value is the angle of the point measured from the positive xaxis.
For example, to enter the point (3, /4), you would press the following buttons:
 MODE
 POLAR
 3
 ENTER
 /4
 ENTER
The point (3, /4) will now be displayed on the graphing screen.
Changing the Graphing Window
The graphing window on the TI84 Plus can be used to control the range of the x and yaxes, as well as the range of the radial axis. To change the graphing window, press the WINDOW button.
The Xmin, Xmax, Ymin, and Ymax boxes can be used to set the range of the x and yaxes. The Rmin and Rmax boxes can be used to set the range of the radial axis.
For example, to set the graphing window so that the xaxis ranges from 5 to 5, the yaxis ranges from 5 to 5, and the radial axis ranges from 0 to 10, you would press the following buttons:
 WINDOW
 Xmin
 5
 ENTER
 Xmax
 5
 ENTER
 Ymin
 5
 ENTER
 Ymax
 5
 ENTER
 Rmin
 0
 ENTER
 Rmax
 10
 ENTER
The graphing window will now be updated to reflect the new settings.
Graphing Polar Equations
Once you have entered the polar coordinates of a point and changed the graphing window, you can graph the point by pressing the GRAPH button. The point will be plotted on the graphing screen.
You can also graph polar equations by entering the equation in polar form. To do this, press the Y= button and enter the equation. The equation will be displayed on the graphing screen.
To graph the equation, press the GRAPH button. The equation will be plotted on the graphing screen.
The TI84 Plus is a powerful graphing calculator that can be used to graph polar equations. By entering the polar coordinates of a point and changing the graphing window, you can easily graph points in polar coordinates. You can also graph polar equations by entering the equation in polar form.
Adding Polar Equations to a Graph
To add a polar equation to a graph, press the Y= button. Then, enter the equation of the polar curve, using the variable. For example, to graph the equation r = , you would enter the following into the Y= menu:
Y1 =
Once you have entered the equation, press the GRAPH button to update the graph. The graph of the polar equation will be displayed in the Y= window.
Moving and Scaling Polar Graphs
To move a polar graph, press the TRACE button and use the arrow keys to move the cursor. The cursor represents the r– and coordinates of the point on the graph that is currently being displayed. To move the graph, simply move the cursor to the desired location and press the ENTER key.
To scale a polar graph, press the ZOOM button and select the desired zoom option. The zoom options available are:
 XZoom: Zooms in on the xaxis.
 YZoom: Zooms in on the yaxis.
 XYZoom: Zooms in on both the x– and y**axes.
 ZZoom: Zooms in on the entire graph.
Once you have selected the desired zoom option, press the GRAPH button to update the graph.
This tutorial has provided you with the basic steps on how to graph polar equations on a TI84 calculator. For more information on polar graphs, please refer to the TI84 manual.
How do I graph polar equations on a TI84?
1. Press the MODE button and select Polar.
2. Enter the equation in the Y= screen.
3. Press GRAPH.
The graph will be displayed in polar coordinates.
How do I change the range of the polar graph?
1. Press the WINDOW button.
2. Use the Xmin, Xmax, Ymin, and Ymax sliders to change the range of the graph.
3. Press GRAPH to view the changes.
How do I add labels to a polar graph?
1. Press the 2nd GRAPH button.
2. Select the Labels option.
3. Use the Xlabel and Ylabel fields to enter the labels for the graph.
4. Press ENTER to save the changes.
How do I change the colors of a polar graph?
1. Press the 2nd GRAPH button.
2. Select the Colors option.
3. Use the Graph Color slider to change the color of the graph.
4. Press ENTER to save the changes.
How do I save a polar graph?
1. Press the 2nd GRAPH button.
2. Select the Window option.
3. Use the Filename field to enter a name for the graph.
4. Press ENTER to save the graph.
How do I recall a saved polar graph?
1. Press the 2nd GRAPH button.
2. Select the Retrieve option.
3. Use the Filename field to select the graph you want to recall.
4. Press ENTER to recall the graph.
In this blog post, we have discussed how to graph polar equations on the TI84 calculator. We first reviewed the basics of polar coordinates, then showed how to enter and graph polar equations using the calculator’s MODE menu. We also covered how to use the calculator’s TRACE feature to examine polar graphs, and how to find the slope and intercept of a polar graph. Finally, we provided some tips for graphing polar equations effectively.
We hope that this blog post has been helpful in teaching you how to graph polar equations on the TI84 calculator. If you have any questions, please feel free to leave them in the comments below.
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