Hello, I need a tool that can be used to write mathematical, chemistry and physics symbols or fomular in my ASP.NET application. The scenario is that, my clients will be solving mathematical, chemistry or physics questions from the ASP.NET application and they will need to write the formular using a tool build in my ASP.NET application to solve any question(from algebra, trigonometry, set theory e.t.c...) in a way they think the answer to the question should be. I am stuck here as I do not know the kind of tool that can be used to accomplish this. I will be glad to hear a favourable reply on this forum. Thank You,