English | Español

Try our Free Online Math Solver!

Online Math Solver

 

 

 

 

 

 

 

 
 
 
 
 
 
 
 
 

 

 

 
 
 
 
 
 
 
 
 

Please use this form if you would like
to have this math solver on your website,
free of charge.


Matrix Operations on the TI-89

Entering a Matrix: Press [APPS] and select [Data/Matrix Editor]. Select either 1:Current, 2:Open..., or 3, New where appropriate.
Selecting New and entering the information about the matrix as follows:

Press [HOME] to return to the Home screen. Now pressing a and [ENTER] will show you the matrix.

Row Operations : The Row operations can be found by pressing [2nd][MATH] selecting [4: Matrix] and selecting [J: Row ops]. Row
ops is far enough down the list that moving up the list is faster. Here are examples of row operations :

Note: If you are doing many row operations on the same matrix you should use [ANS] instead of the name of the matrix after the first
row operation .

Row Echelon Form (ref) and Reduced Row Echelon Form
(rref):
Press [2nd][MATH] select [4:Matrix]. Select the
desired form followed by the name of the matrix and press
enter. For example:

Inverse Matrices: Select the name of the matrix and raise it
to the –1 power . The matrix A above is not invertible so we
consider

If you want your results in fractions select [Exact/Approx] after pressing [MODE]. Set the calculator to [2: EXACT] then all
computations will come out in fractions .

Addition and Multiplication : These operations are done with the regular multiplication and addition keys along with the names of
the matrices. For example consider the matrices B and C shown on the left with the computations shown on the right.

Prev Next