Is the matrix [[1, 1], [1, 1]] invertible?
Is the matrix [[1, 1], [1, 1]] invertible?
Approach: Check determinant.
No. 1-1=0.
Follow-up: What is the rank?
Key concepts: singular matrix.
Is the matrix [[1, 1], [1, 1]] invertible?
Approach: Check determinant.
No. 1-1=0.
Follow-up: What is the rank?
Key concepts: singular matrix.