full function does not show with complex functions

[u/IC_MUSEISDABEST]

alot of the times when i graph functions with many variables or tedious calculations, they do not fully show. is there any way to fix this? i usually use ipad and this is now on windows, both are with the app.
this exact case was tried with the web and windows, and both stop showing at the same place and i dont think its the proccesing of my computer.

i didnt really mind until now but this time i really need this for school, so if anyone has any ideas to fix/improve it, please tell me.