What does E mean in 9.0122222900391E-5? [closed]
And the displayed time is a really small number. But that doesn't make sense when compared to the other time in the question. 0.00013899803161621 is bigger than 9.0122222900391E-5. If it …
inequality - How can one prove that $\pi^4 + \pi^5 < e^6 ...
2012年9月18日 · Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for …
calculator - Why doesn't my TI-84 give me an exact value when ...
2017年11月6日 · Scientific notation can represent exact numbers if they are terminating decimals. In your case $0.17^4=0.00083521=8.3521E-04$ exactly.
Suppose G is a connected planar simple graph with
2015年11月3日 · Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for …
calculus - How to prove a limit exists using the $\epsilon$-$\delta ...
You want to prove that $\lim\limits_{x\to 1}(x+4) = 5$ using $\epsilon$-$\delta$. Let $\epsilon\gt 0$. We need to prove that there exists a $\delta\gt 0$ such that
probability - Submartingale convergence (Durrett 5.3.1)
Exercise 5.3.1 in Durrett's "Probability Theory and Examples" states Let $X_n$, $n\ge 0$, be a submartingale with $\sup X_n < \infty$.
Comparing large exponents - Mathematics Stack Exchange
2015年7月10日 · Without calculator, I have to determine which of the following is larger: $2^{350}$ or $5^{150}$ I know only very basic exponential laws, and haven't covered …
probability - Why is the expected value $E(X^2) \neq E(X)^2 ...
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 …
probability - How to find E(Y) given that the random variable X is ...
2015年6月29日 · Update. We have $\mathbb{E}[X^2] = 2/\lambda^2 = 2/(0.5)^2 = 8$. Thus, \begin{align} \mathbb{E}[Y^2] = \mathbb{E}[(1 - 2X)^2] = \mathbb{E}[1 - 4X + 4X^2] &= …
Probability of drawing a flush from a standard deck of cards
The following is the problem put to me: A 5-card poker hand is dealt from a well shuffled regular 52-card playing card deck. Find the probability that the hand is a Flush (5 nonconsecutive …