Integrals

[Kristen]

Need the integral of e^-(constant)x^2.........don't want to use guass integral trick

[Ambitwistor]

Here is a thread that discusses various ways for evaluating Gaussian integrals,

http://www.nrich.maths.org/askedNRICH/edited/2171.html

but the equations may not come across on your browser.

[mathman]

The indefinite integral cannot be expressed in simple form. Usually it is given in terms of a function called "erf", which is simply a standard form (constant=1/2) integral.