HP17bII+ Programming t-distribution

[Don Shepherd]

(07-23-2015 06:25 AM)daisyclover18 Wrote:  Hi, does anyone know how to program the student's t-distribution on this calculator's solver?

Daisy, according to the formula given at Wikipedia, this should work, but doesn't, at least on by 17bii:

(fact(ip(((v+1)/2)-1))

/

(sqrt(pi x v) x fact(ip((v/2)-1))))

x

(((1+sq(t)/v)) ^ (-((v+1)/2))))

that's a lot of parentheses, but if they didn't match it wouldn't "compile" and it does, and the error occurs when you CALC, enter a value for v and then solve for t. It says "solution not found" pretty quickly. Perhaps someone can look at this and see why it does not work.