Matrix inverse (inv) in MATLAB - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to calculate the inverse of matrix A.

MATLAB

B = [1](A);

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

Ainv

Binverse

Cinvert

Dinver

Attempts:

3 left

💡 Hint

Common Mistakes

Using a non-existent function like 'inverse' or 'invert'.

Misspelling the function name.

The inv function in MATLAB calculates the inverse of a matrix.

2fill in blank

medium

Complete the code to compute the inverse of a 3x3 matrix M.

MATLAB

invM = [1](M);

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

Ainvert

Binv

Cinver

Dinverse

Attempts:

3 left

💡 Hint

Common Mistakes

Using incorrect function names.

Trying to use functions that do not exist in MATLAB.

Use inv to find the inverse of matrix M.

3fill in blank

hard

Fix the error in the code to correctly compute the inverse of matrix X.

MATLAB

Y = [1](X);

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

Ainvers

Binvert

Cinver

Dinv

Attempts:

3 left

💡 Hint

Common Mistakes

Using misspelled function names.

Using non-existent functions.

The correct MATLAB function to compute the inverse is inv.

4fill in blank

hard

Fill both blanks to create a matrix inverse and multiply it by the original matrix.

MATLAB

invA = [1](A);
I = A [2] invA;

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

Ainv

B*

C+

D-

Attempts:

3 left

💡 Hint

Common Mistakes

Using addition or subtraction instead of multiplication.

Using incorrect function names.

Use inv to get the inverse, then multiply A by its inverse using *.

5fill in blank

hard

Fill all three blanks to compute the inverse of matrix B, multiply it by vector v, and store the result in x.

MATLAB

invB = [1](B);
x = invB [2] v;
result = [3];

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

Ainv

B*

Cx

D+

Attempts:

3 left

💡 Hint

Common Mistakes

Using addition instead of multiplication.

Using wrong variable names.

Misspelling the inverse function.

First, compute the inverse with inv, then multiply by v using *, and finally assign the product to result.