What is the sum of the eigenvalues of the matrix [[2, 3], [1, 4]]?

What is the sum of the eigenvalues of the matrix [[2, 3], [1, 4]]?

Approach: The sum of eigenvalues equals the trace.

6. 2 + 4 = 6.

Follow-up: What is the product of the eigenvalues?

Key concepts: trace.