Matrices 2 (AQA A-Level Further Maths): Flashcards
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Practise the cards
10 cards from this deck
Det. of
Det. of
Minor of a matrix element
Minor of a matrix element
Det. after removing element's row and column
Sign pattern for 3×3 det. using top row
Sign pattern for 3×3 det. using top row
Plus, minus, plus
Area of image under transformation
Area of image under transformation
Area of original ×
What negative determinant indicates
What negative determinant indicates
Reflection in the transformation
Condition for matrix to have an inverse
Condition for matrix to have an inverse
(non-singular)
Steps to find 2×2 inverse
Steps to find 2×2 inverse
Swap diagonals, change signs of off-diagonals, ÷ by det.
Sign matrix for 3×3 inverse (checkerboard pattern)
Sign matrix for 3×3 inverse (checkerboard pattern)
Condition for unique solution to
Condition for unique solution to
If in linear system
If in linear system
No solution or infinitely many solutions