Math & Science ⇒ Triangular Matrix

[elisagmf]

Hello,

I need to create upper and lower triangular matrices where there must be a big zero and an actual triangle (the figure of a triangle) in the upper/lower part.

Is it possible to create? Is there a diagonal line?

[localghost]

Please show your own efforts in form of a self-contained and minimal example, even if you didn't get the desired result. Fixing existing code is easier and faster than writing something from scratch.


Best regards and welcome to the board
Thorsten