# Documentation

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# Arithmetic

Addition, subtraction, multiplication, division, power, rounding

## Functions

 plus Addition uplus Unary plus minus Subtraction uminus Unary minus times Element-wise multiplication rdivide Right array division ldivide Left array division power Element-wise power mtimes Matrix Multiplication mrdivide Solve systems of linear equations xA = B for x mldivide Solve systems of linear equations Ax = B for x mpower Matrix power
 cumprod Cumulative product cumsum Cumulative sum diff Differences and Approximate Derivatives movsum Moving sum prod Product of array elements sum Sum of array elements
 ceil Round toward positive infinity fix Round toward zero floor Round toward negative infinity idivide Integer division with rounding option mod Remainder after division (modulo operation) rem Remainder after division round Round to nearest decimal or integer
 bsxfun Apply element-wise operation to two arrays with implicit expansion enabled

## Topics

Array vs. Matrix Operations

Matrix operations follow the rules of linear algebra, and array operations execute element by element operations and support multidimensional arrays. The period character (.) distinguishes the array operations from the matrix operations.

Compatible Array Sizes for Basic Operations

Most binary operators and functions in MATLAB® support numeric arrays that have compatible sizes. Two inputs have compatible sizes if, for every dimension, the dimension sizes of the inputs are either the same or one of them is 1.

Operator Precedence

Precedence rules determine the order in which MATLAB evaluates an expression.

Floating-Point Numbers

MATLAB represents floating-point numbers in either double-precision or single-precision format. The default is double precision.

Integers

MATLAB supports 1-, 2-, 4-, and 8-byte storage for integer data. If you use the smallest integer type that accommodates your data, you can save memory and program execution time.