Available on the AppStore
https://apps.apple.com/us/app/calcula...
https://apps.apple.com/us/app/calcula...
Slide to the Left-Keyboard → Matrix:
Select Matrix Size → [ADD] to enter a matrix
Slide to the Left-Keyboard → Matrix:
Edit → [A], [B], [C], [D] to make a bigger matrix
[Main Menu] → [Matrix] to access more Matrix/Vector Functions