Question

Using MathLab

Implement a user-defined function that takes as input a matrix and finds the maximum value in each column.

You are not allowed to use loops in your solution.

Moreover, you MUST define a user function as demonstrated in class (in a separate .m file).

Answer 1

The question involves creating a MATLAB function to find the maximum value in each column of a matrix without using loops. The built-in function max is used in the user-defined function to perform this operation along the first dimension.

Step-by-step explanation:

The subject of the question is creating a user-defined function in MATLAB (a high-level programming and numerical computing environment) without using loops. The task is to implement a function that takes a matrix as input and returns the maximum value in each column.

To achieve this without using loops, one could make use of MATLAB's built-in functions. An appropriate function to use here is max, which can operate on matrices and return the maximum value along a specified dimension. In the case of finding the maximum per column, you would specify the first dimension (which represents rows in MATLAB's indexing system) for the function to process.

A possible implementation of the user-defined function in a separate .m file could be:

function maxValues = findMaxInColumns(inputMatrix)
% This function finds the maximum value in each column of a matrix
[maxValues, ~] = max(inputMatrix); % No need to store index of max value
end

This function would be saved in a file named 'findMaxInColumns.m'. When you call this function from the MATLAB command window or a script, it will output a row vector where each element corresponds to the maximum value of each column in the input matrix.