Casio fx-991EX - Page 14

fx-991EX Quick Start Guide14
Enter the matrix values by pressing
3pz6p8p2p.
To perform matrix calculations, like addition, subtraction, and
multiplication, follow these simple commands.
To recall the name of a matrix, press i.
To add A + B, press 3(MatA)+i4(MatB)p.
The solution matrix is displayed in the window and can be viewed
without scrolling.
To calculate the determinant of the matrix, press
iR2(Determinant) i3(MatA))p.
Matrices can be used to solve a system of equations.
Take the following equation with 3 unknowns:
Enter the coefcient matrix as Matrix A and the solution matrix as Matrix B.
MATRIX