How do I enter a matrix?
To enter a matrix, you use vector brackets: ❨❩. Specifically, you nest these to create a “vector of vectors” representing a matrix in row-major order.
To insert a pair of vector brackets, press Shift+Ctrl+E or Shift+Ctrl+V.
Examples:
A ≔ ❨❨2, 1, 3❩, ❨0, −2, 1❩, ❨1, 2, 3❩❩
⎛ 2 1 3⎞ ⎜ 0 −2 1⎟ ⎝ 1 2 3⎠
det(A)
−9