Hi Joel,
As per my understanding, you want to run MATLAB functions inside the excel sheet, without the use of opening MATLAB.
You can do that using Excel Add-ins Using MATLAB Compiler. By applying this add-in, you can create a MATLAB function and add it to the excel sheet as a package. Further this will enable you to use that function as a excel sheet formula.
To get started with the add-ins, kindly refer to the following links:
