If the moment generating function of $X_1, X_2, X_3$ is
How to find the moment generating function of just X1?
Need some guidance on how to start..
2026-03-29 22:13:39.1774822419
Moment Generating function of one random variable among multiple random variables
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$$M_{(X,Y,Z)}(u,0,0)=E\left[\mathrm e^{u\cdot X+0\cdot Y+0\cdot Z}\right]=E\left[\mathrm e^{u\cdot X}\right]=M_{X}(u)$$