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How to Do a Cross Product on a TI-83

Cross product mathematics is an advanced binary operation, also known as a vector product. Solving a cross product problem is complex, and is best done with a graphing calculator. While calculators that are capable of 3D graphing are ideal for solving cross products, they are often expensive and impractical for the average consumer. By creating a simple program on the TI-83, you can solve a cross product without a 3D calculator.

Instructions

    • 1

      Select "PRGM" and "ENTER" to start a new program.

    • 2

      Input "Prompt" by selecting, "PGRM," "Right Arrow" and "2" followed by "A," "B" and "C." Your screen will appear as ":Prompt A, B, C."

    • 3

      Select "ENTER" and repeat the above step while substituting "D," "E" and "F" for the previous letters that were inputted.

    • 4

      Press "ENTER", and input the equation, "AE-BD=Z."

    • 5

      Push "ENTER" again, and input the equation, "CD-AF=Y."

    • 6

      Press "ENTER" and input the final part of the cross product equation, "BF-CE=X."

    • 7

      Input "ENTER", "PRGM," "Right Arrow" and "3", followed by "X,Y,Z."

    • 8

      Code your final line, press "ENTER" and "√(X²+Y²+Z²)."

    • 9

      Save your program by pressing "PRGM" and naming the program "CROSSPRODUCT."

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