excel matrix inverse matrix multiplication

How to calculate the matrix multiplication by two spreadsheets

https://jingyan.baidu.com/article/219f4bf7c9039cde452d3854.html

 

Tools / materials

• Microsoft Excel 2003
• MMULT function

  Method / Step

1. 1

   Open Excel, multiply two matrices require all the data written in Excel, such as A1: C2 Write first matrix region, E1: F3 second matrix region to write:

   

2. 2

   Then, insert between any of the formula = MMULT cells (A1: C2, E1: F3), enter OK:

   

3. 3

   We know that a m × n matrix of a (m, n) multiplying a n × p matrix b (n, p), will give a m × p matrix of c (m, p), then, in our example is a (2,3) XB (3,2), the matrix should give a C (2,2), i.e. the matrix 2 rows and 2 columns, then we enter the formula in the cell as a reference, select 4 units grid:

   

4. 4

   Once selected, we edit the keyboard's function keys F2 to activate the formula:

   

5. 5

   Keyboard then press Ctrl + Shift + Enter key combination, the equation becomes an array formula, to obtain the final result of multiplying two matrices (we refer back to the formula, a pair of automatic braces "{}", which Excel is to press Ctrl + Shift + enter key combination mark after array formula, remember, you can not enter the braces manually array formula, press the key combination can only be generated, as he comments as just a flag to the user stated that this is an array formula only):

   

   END

Precautions

• MXN matrix is ​​actually an array of M rows and N columns, so does the matrix multiplication must use an array formula in Excel
• Input Method array formula can only press Ctrl + Shift + Enter key combination

   

   

   

  Calculated using Excel spreadsheet matrix inverse matrix?

  https://jingyan.baidu.com/article/2c8c281d8b9e8d0008252a98.html

  Tools / materials

• Excel 2013 spreadsheet

  Method / Step

1. Open the Excel 2013 spreadsheet, create a new form.

   

   

2. The computed matrix you entered into the table, as shown in FIG.

   

3. Select the desired inverse matrix grid, click the icon above, as shown in Fig.

   

   

4. Select [All], in the selector function [MINVERSE] In the selected category.

   

   

5. Please click the icon.

   

6. Select the matrix you want to calculate.

   

7. Then click on the figure below places.

   

8. To start this setup, press [Crtl] and [shift], then hold down the [enter].

   

9. that's it.