Creating Function in Files in MATLAB Last Updated : 28 Apr, 2025 Comments Improve Suggest changes Like Article Like Report MATLAB is a high-performance language that is used for matrix manipulation, performing technical computations, graph plottings, etc. It stands for Matrix Laboratory. Functions:The function is a set of statements or commands, which take input/s as parameters and return output. We write functions to use it again and again in the program i.e. it makes a block of code reusable. It makes it easier to find errors and also reduces code redundancy. Types of Function:Library Functions: In MATLAB Software, there are some inbuilt functions, which take input as arguments and return output. E.g. log(x), sqrt(x), line space(a,b,n), etc.User-Defined Functions: In MATLAB, we also create functions by writing Matlab commands in files that take input/s as argument/s and then return the output. Also, save the function file using the name of the function itself. Steps to Create a Function File in MATLAB:Step 1: Create a file and write commands using the function keyword.Step 2: Save the function file with the same name as the function. Here I have saved the file with the name solve.m.Step 3: Use the function in Command Video by providing suitable argument/s.Now we see creating a function and saving it in MATLAB. Example 1: Matlab % function to calculate sin(x)+cos(x) where x is in radians % Here solve is the name of the function which % will return x and takes an argument a function x = solve(a) x = sin(a) + cos(a); Using the function to be called in Command Window. Example 2: Matlab input = 1.5708; % display the function's output disp(solve(input)); Output: The above screenshot is showing: Function saved as a file named solve.mCommand Window in which we are calling function for various inputs. 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