# Moment Generating Function (Poisson Distribution)Watch

Thread starter 2 years ago
#1
I understand how the exponential function is used to get the 3rd part of the answer which is e-leele^t

Could someone please explain what happens to take the e-l out of the sum and show how the etl can be put inside the brackets?
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2 years ago
#2
(Original post by JKITFC)
I understand how the exponential function is used to get the 3rd part of the answer which is e-leele^t

Could someone please explain what happens to take the e-l out of the sum and show how the etl can be put inside the brackets?
As far as the sum is concerned, the is a constant and can therefore be taken outside of the sum. For the second question,

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