Matrix determinant (det) in MATLAB - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to calculate the determinant of matrix A.

MATLAB

d = [1](A);

Drag options to blanks, or click blank then click option'

Adet

Bsum

Cprod

Dinv

Attempts:

3 left

💡 Hint

Common Mistakes

Using sum or prod instead of det.

Trying to invert the matrix instead of finding determinant.

The det function calculates the determinant of a matrix in MATLAB.

2fill in blank

medium

Complete the code to calculate the determinant of a 2x2 matrix M.

MATLAB

d = [1](M);

Drag options to blanks, or click blank then click option'

Ainv

Brank

Cdet

Dtrace

Attempts:

3 left

💡 Hint

Common Mistakes

Using inv or rank instead of det.

Using trace which sums diagonal elements.

The det function computes the determinant of matrix M.

3fill in blank

hard

Fix the error in the code to correctly compute the determinant of matrix B.

MATLAB

determinant = [1](B);

Drag options to blanks, or click blank then click option'

Adet

Bsum

Cprod

Dinv

Attempts:

3 left

💡 Hint

Common Mistakes

Using sum or prod instead of det.

Using inv which computes inverse.

The correct function to compute determinant is det.

4fill in blank

hard

Fill both blanks to create a function that returns the determinant of input matrix X.

MATLAB

function d = [1](X)
    d = [2](X);
end

Drag options to blanks, or click blank then click option'

AmyDet

Bdet

Csum

Dinv

Attempts:

3 left

💡 Hint

Common Mistakes

Using sum or inv inside the function instead of det.

Not defining a function name.

The function name can be myDet, and inside it calls det to compute the determinant.

5fill in blank

hard

Fill all three blanks to compute and display the determinant of matrix A.

MATLAB

A = [1 2; 3 4];
d = [1](A);
disp([[2] num2str([3])]);

Drag options to blanks, or click blank then click option'

Adet

B'Determinant is: '

Cd

Dsum

Attempts:

3 left

💡 Hint

Common Mistakes

Using sum instead of det.

Not converting number to string before concatenation.

Using wrong variable names.

Use det to get determinant, then display the message with disp combining text and the value.