# Step-by-Step Guide to Do Cross Products on TI-Nspire CX

Cross product is a technique used to solve a system of linear equations. It is commonly used in mathematics and other sciences. In this guide, we will show step-by-step instructions for performing a cross product on TI-Nspire CX.

## Step 1: Open the TI-Nspire CX Application

Before you can begin performing the cross product, you must first open the TI-Nspire CX application. If you have not yet installed the application, it is available for free here. Once you've installed the application, simply open it on your device.

## Step 2: Enter the Linear Equations

Now that the application is open, you can enter the linear equations. To do this, type out each equation in the "Home" screen, with the equation's first term on the left and the equal sign on the right. Press "Enter" once you've entered each equation.

## Step 3: Select the Cross Product

Once you have entered the equations, you can begin the cross product. To do this, first select the "Functions" option in the toolbar at the bottom of the page. From here, select the "Matrix Math" option, and then select the "Cross" option.

## Step 4: Calculate the Cross Product

Once you have selected the "Cross" option, the application will ask you to enter the matrix number. For example, if you are calculating the cross product of two vectors, you would enter the number "2". Once you have entered the matrix number, the application will calculate the cross product of the linear equations and display the result.

## Step 5: Save the Result

Once you have the result of the cross product, you can save it by tapping the empty star icon in the upper right-hand corner. Doing this will create a bookmark of the result and save it in the "Notes" section.

## FAQ

### What is the Cross Product?

The cross product is a mathematical operation used to solve a system of linear equations. It is a method of finding the area of a triangle with given side lengths, as well as finding the vector normal to two other vectors.

### How Do I Perform a Cross Product in TI-Nspire CX?

To perform a cross product in TI-Nspire CX, you first need to open the application and enter the linear equations. Once you have done this, select the "Functions" option in the toolbar and then select the "Matrix Math" option. From here, select the "Cross" option and enter the matrix number. The application will then calculate the cross product and display the result.

### What is a Matrix Number?

A matrix number is a number that tells the TI-Nspire CX what type of matrix you are creating. Depending on the number you enter, the application will be able to calculate different types of matrices, such as a cross product. For example, if you are calculating the cross product of two vectors, you would enter the number "2".

### Can I Save the Result of a Cross Product in TI-Nspire CX?

Yes, you can save the result of a cross product in TI-Nspire CX. To do this, tap the empty star icon in the upper right-hand corner. Doing this will create a bookmark of the result and save it in the "Notes" section.

### Can I Calculate a Cross Product on Other Devices?

Yes, the TI-Nspire CX application is available for other devices, such as iPad and Android. To download the application for other devices, visit TI-Nspire Education Technology.

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