Across
- 2. a symbol (usually a letter like 𝑥,𝑦,𝑧) that represents an unknown value in an equation or expression.
- 3. a matrix formed by swapping the rows and columns of the original matrix. Notation: A^^T
- 7. A quantity with both magnitude and direction, often represented as an ordered list of numbers.
- 10. a mathematical statement that shows two expressions are equal
- 11. the elements that lie from the top-left to the bottom-right of a square matrix.
- 13. a square matrix with 1’s on the main diagonal and 0’s elsewhere; also called the identity matrix.
- 14. A matrix that, when multiplied by the original matrix, yields the identity matrix.
- 15. A rectangular array of numbers arranged in rows and columns.
Down
- 1. a method to solve systems of linear equations by using row operations to transform the matrix into an upper triangular form, then solving by back-substitution.
- 4. a horizontal arrangement of elements in a matrix.
- 5. the first non-zero element in a row during Gaussian elimination (or similar row operations)
- 6. a matrix with an equal number of rows and columns (m = n)
- 8. the number that multiplies a variable
- 9. A variable that defines or controls the behavior of a system, often used to describe infinite solution sets.
- 12. a method to solve a system of linear equations using determinants