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The *row( Command

Command Summary Command Syntax Calculator Compatibility Token Size
Multiplies a row by a scalar. row(factor,matrix,row*) TI-83/84/+/SE 1 byte

Press:
1. MATRX (on a TI-83) or 2nd MATRX (TI-83+ or higher) to access the matrix menu.
2. RIGHT to access the MATH submenu.
3. ALPHA E to select *row(, or use arrows and ENTER.

The *row( Command

The *row( command multiplies a row of a matrix by a scalar factor and returns the result. It is an elementary row operation used in Gaussian Elimination. 

[[1,2][3,4]]
    [[1 2]
     [3 4]]
*row(10,Ans,1)
    [[10 20]
     [3  4 ]]

Advanced Uses

You can multiply columns instead of rows with the aid of the T (transpose) command.

Error Conditions

  • ERR:INVALID DIM is thrown if the row argument isn't a valid row (is larger than the size of the matrix, or otherwise bad)
Authors: KG