Probability question?

integrate e^(-x^2)dx from minus infinity to plus infintry

I think you have to use "numeric methods" .. I did this

once with a BASIC program ... works just fine

since it's symetric about the y-axis, you only need to do zero to infinity and adjust accordingly

let dx = .01 for instance ...

let x = 0

for n = 0 to 1000

x = x + dx

fx = dx * e^(-x^2)

sumx = sumx + fx

print x; sumx

next n

you will get a printout of almost ALL you will ever need

(print it to a file)

Try this web page:

newsreader.mathworks.com/WebX?14@0.36XIbKa8vpd.0@.ef2e1eb

I'm not familiar with what you're looking for, but a yahoo search brought up a lot of possibilities. I searched for Gaussian pdf