Math

Eigenvalue Calculator (2×2)

Eigenvalues of a 2×2 real matrix.

Free to use — no sign-up or login.

λ₁

λ₂

This free Eigenvalue Calculator (2×2) covers Eigenvalues of a 2×2 real matrix.

Roots of λ² − (tr A)λ + det A = 0. Related math tools sit beside How it works, with no account required.

Using the Eigenvalue Calculator (2×2)

Eigenvalues of a 2×2 real matrix. Typical inputs are a, b, c and d. How it works beside the form states the identity the Eigenvalue Calculator (2×2) applies.

FAQ

How do I use the Eigenvalue Calculator (2×2)?

Open the Eigenvalue Calculator (2×2), fill a, b, c and d, and read the result. Roots of λ² − (tr A)λ + det A = 0.

What formula does the Eigenvalue Calculator (2×2) use?

The Eigenvalue Calculator (2×2) uses the identity in How it works. In words: Roots of λ² − (tr A)λ + det A = 0.