- #1
zli034
- 107
- 0
Say r.v. X, we have pdf f(x) and mgf Mx(t) defined.
Then define Y=-X, y is negative x.
Can we get mgf of Y, i.e. My(t) and how?
I know I can go the way to get pdf f(y) first then My(t). I want to know if Mx(t) is already in my hands, it should be easier to get My(t) other than do f(y) first.
I thought about this whole afternoon. Just don't get it. Please help and thanks in advance.
xoxo
Then define Y=-X, y is negative x.
Can we get mgf of Y, i.e. My(t) and how?
I know I can go the way to get pdf f(y) first then My(t). I want to know if Mx(t) is already in my hands, it should be easier to get My(t) other than do f(y) first.
I thought about this whole afternoon. Just don't get it. Please help and thanks in advance.
xoxo