Casio fx-CG20 Manual De Usuario

CASIO

2-41

   

  From the Main Menu, enter the  Run-Matrix 

  mode, and press  

3( 'MAT) to perform Matrix 

calculations.

  26 matrix memories (Mat A through Mat Z) plus a Matrix Answer Memory (MatAns), make it 
possible to perform the following matrix operations.

    • Addition, subtraction, multiplication, division

    • Scalar multiplication calculations

   • Determinant calculations

   • Matrix transposition

   • Matrix inversion

   • Matrix squaring

    • Raising a matrix to a specific power

   •  

Absolute value, integer part extraction, fractional part extraction, maximum integer 
calculations

    • Inputting complex numbers in matrix elements and using complex number related functions

    • Matrix modification using matrix commands

  The maximum number of rows that can be specified for a matrix is 999, and the maximum 
number of columns is 999.

• You can input either an upper-case X (

a+(X)) or lower-case 

 (

v) for matrix memory 

“Mat X”. Both “Mat X” and “Mat 

” refer to the same memory area.

 

 

   About Matrix Answer Memory (MatAns)  

  The calculator automatically stores matrix calculation results in Matrix Answer Memory. Note 
the following points about Matrix Answer Memory.

  • Whenever you perform a matrix calculation, the current Matrix Answer Memory contents are 

replaced by the new result. The previous contents are deleted and cannot be recovered.

  • Inputting values into a matrix does not affect Matrix Answer Memory contents.

k   Inputting and Editing Matrices

  Pressing  

3( 'MAT) displays the Matrix Editor screen. Use the Matrix Editor to input and edit 

matrices. 

  

 

 

 

 

 

 

       

 

 

 

  

×   

 …  

 (row)  

×   

 (column) matrix

       

 

 

None… no matrix preset

 

 

  • { DELETE } / { DEL-ALL   } ... deletes {a specific matrix}/{all matrices}

  • { DIM } ... {specifies the matrix dimensions (number of cells)}

• {CSV} ... {stores a matrix as a CSV file and imports the contents of CSV file into one of the 

matrix memories (Mat A through Mat Z, and MatAns) (page 2-47)}