6 May 2010
Rev. 1.17 May 2010


Solution of a System of Linear Equations on the TI 83/84 Calculator
Three Equations in Three Unknowns Example


MATRIX(itís the 2nd of x-1 --enter augmented-matrix data)

††††††††††††††† RIGHT_ARROWtwice to reach EDIT menu item and ENTER

††††††††††††††††††††††††††††††† 3ENTER4ENTER(matrix size)

††††††††††††††††††††††††††††††† ††††††††††††††† (enter data using ENTER key after each item)

††††††††††††††††††††††††††††††††††††††††††††††† ††††††††††††††† QUIT(itís the 2ND of MODE)


MATRIX(prepare for Gauss-Jordan elimination to produce reduced right echelon form and find x, y, and z)

††††††††††††††† RIGHT_ARROW to the MATH menu item

††††††††††††††††††††††††††††††† UP ARROW 5 times to the B:rref( ††menu item and ENTER


MATRIX (enter matrix name and perform rref() function)

††††††††††††††† optionally, DOWN ARROW to the matrix name you want

††††††††††††††††††††††††††††††† ENTERto put matrix name on main screen rref(function reference

††††††††††††††††††††††††††††††††††††††††††††††† )(close parenthesis)

††††††††††††††††††††††††††††††††††††††††††††††† ††††††††††††††† ENTER (displays reduced right echelon form of augmented matrix)