### Calculating Matrix Determinant in Ruby

Source: https://github.com/ruby/matrix/blob/master/README.md

This example demonstrates how to require the `matrix` library, create a new `Matrix` object, and calculate its determinant. The `determinant` method returns the scalar determinant of the matrix.

```Ruby
require 'matrix'
m = Matrix[[1, 2], [3, 4]]
m.determinant # => -2
```

--------------------------------

### Adding Matrix Gem to Gemfile in Ruby

Source: https://github.com/ruby/matrix/blob/master/README.md

This snippet shows how to include the `matrix` gem in a Ruby application's Gemfile. This ensures that the gem version takes precedence over the built-in library, providing access to the latest features.

```Ruby
gem 'matrix'
```

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