Biscotti is a graphing calculator written in Java by Eric Heien under the supervision of Professor Richard Fateman at UCBerkeley.

Biscotti is currently in beta testing phase. If you visit this page, keep in mind this is not a fully functioning version of Biscotti (you can still try to use it though, but I take no responsibility for what it does, or doesn't, do). If you find something that doesn't work and you feel should, please email me at eheien@uclink.berkeley.edu.

To graph an equation, simply type it in to the upper text box. Biscotti accepts standard infix format equations, meaning things like:

x^2

3*x^(sin(x))

or

3+2*x

Note that Biscotti currently does not allow implicit multiplication, so you must type 3*x, not 3x. You must also use parentheses for any function call, sin(x) and ln(x) are acceptable, but sinx and lnx are not.

Pi is implemented through the function pi(), so to get 3.14159... use pi(), i.e. sin(pi()*x). Symbolic integration (TILU), function max, function min, inflection point, and the edit functions button are currently not fully implemented. Symbolic derivation currently returns a rather nasty function that will work (for the most part) if you just copy and paste it into the equation editing text box.

If something is not working the way you think it should be, please write to eheien@uclink.berkeley.edu. It's the only way I can learn. Also, if you find Biscotti useful (or even if you don't), let others know about it. Thank you!