The MathBrush iPad app is an application that recognizes mathematical expressions as you write them. It does not just support numbers but recognize a wide variety of mathematical expressions. Mathbrush recognizes handwriting which includes variables, functions, integrals and matrices. It is also capable of generating square root sign and Greek letters.
Mathematical expressions created with MathBrush may be exported as Latex, MathML and image formats. They can also be viewed onscreen or shared by email. Files created in MathBrush can also be shared with other MathBrush users. » Read more