Function of gaussian random variable

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SUMMARY

The discussion centers on the mathematical relationship involving the expectation of a Gaussian random variable, specifically the equation E(exp(z)) = exp(E(z^2)/2), where z is a zero-mean Gaussian variable. Participants emphasize the importance of understanding the definition of expectation and suggest demonstrating the equality of two integrals without performing the actual integration. This highlights the fundamental properties of Gaussian distributions and their expectations.

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  • Understanding of Gaussian random variables
  • Knowledge of mathematical expectation and its properties
  • Familiarity with integral calculus
  • Basic statistics concepts related to probability distributions
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  • Study the properties of Gaussian distributions and their moment-generating functions
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Jply
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I'm having trouble showing the following relation:

E(exp(z)) = exp(E(z^2)/2)

where z is a zero-mean gaussian variable and E() is the avg

anyone can help?
 
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Expectation. Look up the definition of the expectation of f(z), where z is some random variable, and do the integral it gives you. Although you don't have to actually do the integration as such, just show the two integrals are equal.
 
Thanks a lot
 

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