Nathan Ellis
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Oct 29, 2013 · Knowing that 2<sup>1/2</sup> + 1 is irrational is enough to prove the irrationality of all numbers of the form 2<sup>1/2</sup> + x, x rational, but what about the rest of them? While it is true that x+r irrational implies x is irrational when r is irrational, you don't have another way of proving that x+r is irrational in the first place ...
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You can use Probability Generating Function(P.G.F). As poisson distribution is a discrete probability distribution, P.G.F. fits better in this case.For independent X and Y random variable which follows distribution Po($\lambda$) and Po($\mu$).
Oct 16, 2017 · Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
Oct 9, 2018 · $\begingroup$ @Ethan the covariance is linear in both of the variables, i.e. you can pull a scalar out of either the first or the second variable.
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Jul 23, 2015 · Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
Draw a right triangle with the two sides making the $90^\circ$ angle of length $\sqrt{x}$ and $\sqrt{y}$. Then, by the Pytagorean Theorem, the Hypotenuse is $\sqrt{x+y}$.
Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
