TAKE THE MYSTERY OUT OF MATRICES WITH THE GRAPHING CALCULATOR!

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Presentation transcript:

TAKE THE MYSTERY OUT OF MATRICES WITH THE GRAPHING CALCULATOR!

With a graphing Calculator it is easy to: ADD/SUBTRACT MULTIPLY DETERMINATES INVERSES SOLVE SYSTEMS

THE IMPORTANT KEYS QUIT ARROW 2ND CLEAR MATRIX OPERATIONS ENTER

Keystrokes for a Matrix 3x3 matrix 2nd, Matrix Type in the numbers of matrix, enter after each number Arrow to right to edit [A]; And Enter: YOU DID IT! Now 2nd, Quit, Clear when finished

REPEAT WITH THE SECOND MATRIX 3x3 matrix Type in the numbers of matrix, enter after each number Arrow to right to edit, down to 2 [B] And Enter: Now 2nd, Quit, Clear when finished

ONLY ONE MORE MATRIX 2nd, Matrix 3x1 matrix Type in the numbers of matrix, enter after each number Arrow right to edit; down to 3 [C]; And Enter: Now 2nd, Quit, Clear when finished

but use a different operation like multiplication. To Add-Subtract-Multiply 2nd, Matrix, 1 for [A] Type the operation + 2nd, Matrix, 2 for [B] Enter Now try again but use a different operation like multiplication.

To Find a Determinate 2ND, Matrix Arrow Right to Math Enter: for No.1 Determinate 2nd, Matrix No. 2 for [B] Enter for Determinate

TO FIND THE INVERSE 2nd, Matrix, 1 for [A] Hit key Enter for Inverse

TO SOLVE A SYSTEM OF EQUATIONS Type in the coefficient Matrix (This is Matrix A) Type in the Answer Matrix (This is Matrix C)

TO SOLVE A SYSTEM OF EQUATIONS Type in Inverse of A 2nd, matrix, 1, Type Multiply Type in the Answer Matrix [C] 2nd, Matrix, 3 Type enter

TO SOLVE A SYSTEM OF EQUATIONS IT’S SOLVED! X = Y = Z = 4 3 1

The mystery of the Matrix is solved. Go out and show your students the wonder of the matrix in a graphing calculator. It makes it easy to work those hard to do problems They can: *Add/Subtract *Multiply *Find determinates *Find Inverses *Solve those 3 variable equations easily They will thank you forever and ever unto Calculus.

TAKE THE MYSTERY OUT OF MATRICES WITH THE GRAPHING CALCULATOR! By Sharon Trogdon Union Intermediate High School Screen shots were of a TI-83+ graphing calculator. Thanks to TI for the TI Connect software and pictures of the calculator.