# Matrix Dot Product Calculator

### FAQ?

#### How do you find the dot product of a matrix?

To multiply a matrix by a single number is easy:

1. These are the calculations: 2×4=8. 2×0=0. ...

2. The "Dot Product" is where we multiply matching members, then sum up: (1, 2, 3) • (7, 9, 11) = 1×7 + 2×9 + 3×11. = 58. ...

3. (1, 2, 3) • (8, 10, 12) = 1×8 + 2×10 + 3×12. = 64. ...

4. DONE! Why Do It This Way?

How to Multiply Matrices - Math is Fun www.mathsisfun.com > algebra > matrix-multiplying

#### Is dot product same as matrix multiplication?

Dot products are done between the rows of the first matrix and the columns of the second matrix. ... The requirement for matrix multiplication is that the number of columns of the first matrix must be equal to the number of rows of the second matrix. For instance, we can multiply a 3x2 matrix with a 2x3 matrix.

Linear Algebra Basics: Dot Product and Matrix Multiplication

towardsdatascience.com > linear-algebra-basics-dot-product-and-matrix-mu...

#### How do you find the dot product of a vector?

Given that the vectors are all of length one, the dot products are i⋅i=j⋅j=k⋅k=1.

The formula for the dot product in terms of vector components

mathinsight.org > dot_product_formula_components