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Exercise 1

Calculate the rank of the matrix

Exercise 2

Calculate the rank of the matrix by the gaussian elimination method.

Exercise 3

Calculate the rank of the matrix by the gaussian elimination method.

Exercise 4

Calculate the rank of the matrix by determinants.

Exercise 5

Calculate the rank of the matrix by determinants.

Exercise 6

Calculate the rank of the matrix by determinants.

Exercise 7

Calculate the rank of the matrix by determinants.

 

Solution of exercise 1

Calculate the rank of the matrix

is null

 

Solution of exercise 2

Calculate the rank of the matrix by the gaussian elimination method.

 

 

 

Therefore r(A) =2.

 

Solution of exercise 3

Calculate the rank of the matrix by the gaussian elimination method.

r(A) = 3.

 

Solution of exercise 4

Calculate the rank of the matrix by determinants.

r(A) = 2

 

Solution of exercise 5

Calculate the rank of the matrix by determinants.

r(B) = 4

 

Solution of exercise 6

Calculate the rank of the matrix by determinants.

Remove the third column as it is zero, the fourth because it is proportional to the first and the fifth because it is the linear combination of the first and second:

r(C) = 2

 

Solution of exercise 7

Calculate the rank of the matrix by determinants.

r(D) = 2

 

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Emma

Emma

I am passionate about travelling and currently live and work in Paris. I like to spend my time reading, gardening, running, learning languages and exploring new places.