Question

Suppose the MATLAB variable exampleArray is defined by: exampleArray = [4, 6, 10; 11, 7, 6; 0, -1, -4]; Click on the array that shows the results of the MATLAB command: x = max(exampleArray)

Options:
A) [11]
B) [4, 6, 10; 11, 7, 6; 0, -1, -4]
C) [11, 7, 10]
D) [11, 11, 0]

Answer 1

The max function in MATLAB returns maximum values when applied to a 2D matrix, focusing on columns by default. For the provided exampleArray, the command x = max(exampleArray) returns an array containing the maximum values from each column, resulting in [11, 7, 10].

Step-by-step explanation:

The MATLAB command max is used to find the maximum value along an array dimension. When applied to a 2D matrix and no dimension is specified, max operates along the first non-singleton dimension, which in this case is columns. Therefore, the command x = max(exampleArray) will return the maximum value in each column of the exampleArray.

In the given exampleArray, which is a 3x3 matrix:

exampleArray = [4, 6, 10; 11, 7, 6; 0, -1, -4]

The maximum values of each column are:

• Column 1: max(4, 11, 0) = 11
• Column 2: max(6, 7, -1) = 7
• Column 3: max(10, 6, -4) = 10

Thus, the result of the command would be an array containing the maximum values of each column: [11, 7, 10], which corresponds to option C.