# TI-BASIC:Rowplus

From Learn @ Cemetech

Jump to navigationJump to search**Command Summary**

Adds one row of a matrix to another.

**Command Syntax**

row+(*matrix*,*row1*,*row2*)

**Menu Location**

Press:

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

TI-83/84/+/SE

1 byte

The row+( command adds one row of a matrix to the second, and returns the result. It is an elementary row operation used in Gaussian Elimination.

[[1,2][3,4]] [[1 2] [3 4]] row+(Ans,1,2) [[1 2] [4 6]]

# Advanced Uses

You can add columns instead of rows with the aid of the ^{T} (Transpose) command.

# Error Conditions

**ERR:INVALID DIM**is thrown if one of the row arguments isn't a valid row (larger than the matrix size, or otherwise bad)