Thread: Joint PDF
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judoudo
#2
Nov26-07, 05:37 PM
P: 4
the joint density function is simply the product of the individual density functions
see here under independence:
http://en.wikipedia.org/wiki/Probabi...nsity_function
in that article you also find the correct formula for the density of X+Y, what you have there seems to be the formula for E[X+Y] imho