Is there a way to fill color for a triangle ?

[lvl107]

   Hello Everyone.

   From :

   Is there a way to fill color for a triangle ?

   Many thanks for your time and help in advance.

       Regards.

[Werner_E · Accepted solution]

There is no built-in way to fill the area, but you can quickly write your own hatch function to create a number of vertical hatch lines between two functions:

MC15 sheet attached

BTW, I'm a bit irritated because I am not able to resize the plot region, making it smaller. Not sure why!?

[Fred_Kohlhepp]

Thanks Werner!

hatch for Express:

(Note that the first two arguments must be labelled as functions.

[Werner_E]

You may consider renaming your function to hatch_aux(f,g,...) and define

hatch(f,g,x1,x2,n):=hatch_aux(f,g,x1,x2,n,n)

That way you avoid having to provide the number of lines (n) twice.

[Fred_Kohlhepp]

Good point!  More "elegant."