I am trying to plot multiple Beta probability distributions in a single grid using Wolfram Alpha: http://www.wolframalpha.com/input/?i=plot+%7Bbeta+distribution%2C+alpha%3D10%2C+beta%3D7%7D%2C+%7Bbeta+distribution%2C+alpha%3D1%2C+beta%3D4%7D
However, Wolfram Alpha can't parse my query. How do I plot multiple probability distributions on a single grid?
