Printable Eigenvalue Formula Card
This one-page formula card is for students, tutors, and anyone working with eigenvalue problems. It lists eigenvalue formulas in a simple two-column table with Fact and Formula. The rows cover the definition A·v = λ·v, v ≠ 0, the characteristic equation det(λI − A) = 0, and the 2×2 eigenvalue formula (T ± √(T² − 4D)) / 2.
Free printable · PDF
- 1 page
- US Letter — choose “Fit to page” for A4
- PDF, 119 KB
Free for personal, family and classroom use.
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Use it as a quick reference while solving matrices by hand, checking steps, or reviewing before a test. Print it and keep it with your notes, or open the PDF while working through practice problems. It is sized for Letter paper and fits on one page.
Good for
- Quick reference during matrix homework
- Review key eigenvalue formulas before tests
- Check steps while solving 2x2 problems
Tip: Print on cardstock and keep it with your algebra notes for fast review.
3 files · PDF, DOCX
Get every sheet: Eigenvalue Practice Pack
This sheet plus 2 more in one download, with the editable Word files. Printable eigenvalue and eigenvector worksheets for 2×2 and 3×3 matrices with worked answer keys, and a linear algebra formula card.
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Printable 2x2 Eigenvalue Worksheet
Printable 3x3 Eigenvalues WorksheetPractice finding eigenvalues for 3x3 triangular matrices with a name and date line, problem space, and a full answer key.