How to Use the MMULT Function in WPS on Windows

This section includes 3 how-to topics for entering the function, filling in matrix parameters, and checking results; use the index below to jump to each task.

How-to Index

How-to Guide

1. Enter the MMULT function and review syntax guidance

Entry path: Formulas tab → formula bar

1. Open WPS Spreadsheet and select the cell where you want the result to appear.
2. Type = in the formula bar or directly in the cell.
3. Continue by typing MMULT(.
4. Review the syntax guidance and confirm that two parameters are required.

Success Criteria

• On-screen result: The editing area shows =MMULT(.
• Next action available: You can continue entering two array or range parameters.

Tips While Using

• Common mistake: If you do not start with =, the content may be treated as plain text.
• Environment note: You need to be in an editable spreadsheet cell.

2. Fill in matrix parameters and complete the calculation

Entry path: Selected result cell → formula bar

1. After MMULT(, enter the first matrix parameter as an array or cell range.
2. Enter the parameter separator, then enter the second matrix parameter.
3. Check that the number of columns in the first matrix matches the number of rows in the second matrix.
4. Type the closing parenthesis ) and press Enter.

Success Criteria

• On-screen result: The target cell or result range shows the calculated output.
• Next action available: You can continue adjusting references or reuse the formula elsewhere.

Tips While Using

• Common mistake: If matrix dimensions do not match, the result may not return correctly.
• Environment note: The referenced ranges should contain numeric data.

3. Check results and handle common errors

Entry path: Result cell → formula bar / source data range

1. Check whether the referenced cells contain text, blanks, or existing error values.
2. Confirm that the two matrices meet the dimension rules for matrix multiplication.
3. If source data changed, review whether the result updated automatically.
4. If needed, confirm the formula structure again and press Enter to recalculate.

Success Criteria

• On-screen result: The result cell shows a usable numeric result or the cause of the error is identified.
• Next action available: You can adjust the parameter ranges and calculate again.

Tips While Using

• Common mistake: Text-formatted numbers may affect the result when used as matrix elements.
• Environment note: In complex worksheets, confirm that referenced ranges are not affected by circular dependencies.