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semidevil
Dec16-04, 10:45 PM
I have absolutly no idea how to do this.

so let X be a random variable with pdf fx(xy) =
x for 0<=x<=1
2 - x for 1 <= 1 <= 2
0 otherwise.

I"m looking through my book, and it doesn't give examples that resembles this.

all I see is the moment is e^(tk) * the function....

and tI dont know what to do when it comes to my problem.

is it the integeral from 0 to 1 of e^(tk) * x + the integeral from 1 to 2 of e^tk * 2 - x?

Dr.ThinkDeep
Dec17-04, 02:15 AM
If you mean int(e^(t*k) *x,x= 0 .. 1) + int(e^(t*k) * (2-x),x=1 ..2) you are right.