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times, .*

Element-wise multiplication

Syntax

C = A.*B
C = times(A,B)

Description

example

C = A.*B multiplies arrays A and B element by element and returns the result in C.

C = times(A,B) is an alternate way to execute A.*B, but is rarely used. It enables operator overloading for classes.

Examples

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Create two vectors, A and B, and multiply them element by element.

A = [1 0 3];
B = [2 3 7];
C = A.*B
C = 

     2     0    21

Create two 3-by-3 arrays, A and B, and multiply them element by element.

A = [1 0 3; 5 3 8; 2 4 6];
B = [2 3 7; 9 1 5; 8 8 3];
C = A.*B
C = 

     2     0    21
    45     3    40
    16    32    18

Create a row vector a and a column vector b, then multiply them. The 1-by-3 row vector and 6-by-1 column vector combine to produce a 6-by-3 matrix with all combinations of elements multiplied.

a = [1 2 3]
a = 

     1     2     3

b = (1:6)'
b = 

     1
     2
     3
     4
     5
     6

a.*b
ans = 

     1     2     3
     2     4     6
     3     6     9
     4     8    12
     5    10    15
     6    12    18

Input Arguments

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Left array, specified as a scalar, vector, matrix, or multidimensional array. Numeric inputs A and B must either be the same size or have sizes that are compatible (for example, A is an M-by-N matrix and B is a scalar or 1-by-N row vector). For more information, see Compatible Array Sizes for Basic Operations.

If A and B are datetime, duration, or calendar duration arrays, then they must be the same size unless one is a scalar.

Data Types: single | double | int8 | int16 | int32 | int64 | uint8 | uint16 | uint32 | uint64 | logical | char | categorical | duration | calendarDuration
Complex Number Support: Yes

Right array, specified as a scalar, vector, matrix, or multidimensional array. Numeric inputs A and B must either be the same size or have sizes that are compatible (for example, A is an M-by-N matrix and B is a scalar or 1-by-N row vector). For more information, see Compatible Array Sizes for Basic Operations.

If A and B are datetime, duration, or calendar duration arrays, then they must be the same size unless one is a scalar.

Data Types: single | double | int8 | int16 | int32 | int64 | uint8 | uint16 | uint32 | uint64 | logical | char | categorical | duration | calendarDuration
Complex Number Support: Yes

Extended Capabilities

Introduced before R2006a


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