Arithmetic Operations

Addition, subtraction, multiplication, division, power, rounding

Arithmetic functions include operators for simple operations like addition and multiplication, as well as functions for common calculations like summation, moving sums, modulo operations, and rounding.

Funktionen

alle erweitern

 + Add numbers, append strings sum Sum of array elements cumsum Cumulative sum movsum Moving sum

Subtraction

 - Subtraction diff Differences and approximate derivatives

Multiplication

 .* Multiplication * Matrix multiplication prod Product of array elements cumprod Cumulative product pagemtimes Page-wise matrix multiplication

Division

 ./ Right array division .\ Left array division / Solve systems of linear equations xA = B for x \ Solve systems of linear equations Ax = B for x

Powers

 .^ Element-wise power ^ Matrix power

Transpose

 .' Transpose vector or matrix ' Complex conjugate transpose pagetranspose Page-wise transpose pagectranspose Page-wise complex conjugate transpose

Array Sign

 uminus Unary minus uplus Unary plus
 mod Remainder after division (modulo operation) rem Remainder after division idivide Integer division with rounding option ceil Round toward positive infinity fix Round toward zero floor Round toward negative infinity round Round to nearest decimal or integer
 bsxfun Apply element-wise operation to two arrays with implicit expansion enabled

Themen

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.