Practice question · Sort into groups
Sort these into Square Matrix or Not Necessarily Square.
Groups: Square · Not necessarily square
- Row vector (1
- Identity matrix I
- Diagonal matrix
- Symmetric matrix
- matrix
Hints
- Ask whether the definition requires equal row and column counts.
- A property comparing an entry with its mirror needs the shape to allow it.
Show the answer
Square: Identity matrix I, Diagonal matrix, Symmetric matrix
Not necessarily square: matrix, Row vector (1
Why
Identity, diagonal, and symmetric matrices are defined only for square matrices.
Practise Matrices and Matrix Operations
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