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This article mainly introduces what are the differences between matlab an and b multiplication, which can be used for reference by friends who need it. I hope you will learn a lot after reading this article. Next, let the editor take you to learn about it.

The difference between matlab an and b multiplication: 1. [a. Multiplib] is preceded by a dot multiplication, which requires that the elements of the two variables are equal in number and arranged in the same way, such as row vectors or column vectors or all matrices; 2, [aqb] the latter is matrix multiplication, requiring the same inner dimension.

Difference:

A. is preceded by dot multiplication, which requires that the elements of the two variables are equal in number and arranged in the same way, such as row vectors or column vectors or both matrices. The latter is matrix multiplication and requires the same inner dimension.

An example is given to illustrate the difference between the two multiplications in matlab.

1. A matrix

2. B matrix

3 、 C=A.*B

4 、 C=A*B

Extended data:

Two operational rules are provided:

1) A.B

When carrying out this operation, we must ensure that the shape of matrix An and B is the same, that is, they are both mn matrices. The result of the operation is that the elements of the corresponding position are multiplied together to form a matrix of the same shape (mn), namely C=AijBij.

2) AB

This operation is the same as the matrix multiplication calculation method in linear algebra, it does not need the same shape of An and B, but the number of columns of An is the same as the number of rows of B. for example, An is a mn matrix and B is a nimble matrix.

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