[Butterfly]

Hi!
I'm having an exam in Instrumental analysis in a week but there are some things I can't figure out. In lecture we were talking about 3 types of curves (where absorb UV light 1. product; 2 titrand; 3. titrant ). But we must know 4 or more types of spectrophotometry titration curves (that was the question in one of latterly exams).
Please, help...

[Borek]

Perhaps some sum will work.