Creating/Solving a cumulative distribution function?
- To: mathgroup at smc.vnet.net
- Subject: [mg41768] Creating/Solving a cumulative distribution function?
- From: "Jonathan Greenberg" <greenberg at ucdavis.edu>
- Date: Wed, 4 Jun 2003 08:34:51 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
Hi there, I was hoping one of you could help me out with a CDF problem I'm
having. I have a PDF:
g[x_]:=(2/Pi)*(1-Cos[4x]) where x ranges from 0 Degree to 90 Degree
I understand the basic idea of a CDF, that I can integrate from 0 to some
arbitary value (y) between (0,90) to get the cumulative probability:
gcdf[x_]:=Evaluate[Integrate[g[x],{x,0Degree,x}]
I'd like to Solve for x, given:
gcdf[x]==Random[Real,0,1] where 0Degree>=x>=90Degree
Solve, NSolve and FindRoot don't appear to be working correctly -- can
someone give me a hand solving this equation?
--j