fx-9860GII

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Ref

On a Casio calculator you can find the row echelon form of a matrix

		MAT		▷		Ref
OPTN		F2		F6		F4

or via the CATALOG as

 Ref_ 

You can use the command any time in the RUN·MAT, STAT, TABLE, EQUA and PRGM modes.

 

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Explanation

A matrix is said to be in row echelon form when all its non-zero rows have a pivot, that is, a non-zero entry such that all the entries to its left and below it are equal to zero.

The row echelon form operation may not produce accurate results due to dropped digits.

 

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Example 1

In the matrix memories we have

Mat E = 

To find the row echelon form of this 2 × 3 matrix

MAT

▷

Ref

▷

Mat

OPTN

F2

F6

F4

F6

F1

ALPHA

E

EXE

which gives

Ans 1 2 3 1 1 1.25 1.5 2 0 1 2   1

Press  EXIT  to close the screen

Ref Mat E Done

 

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