Activity for DNB
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
| Comment | Post #288090 |
Many thanks! I prefer your second example. English ISN'T my first language, which is why your first example bewildered me. (more) |
— | 12 months ago |
| Comment | Post #288090 |
Thanks. $\color{limegreen}{1.}$
Can you simplify your example of *"Imagine a tabletop roleplaying game. Your character is sneaking down a dungeon corridor. Unfortunately, you neglected to check for traps, and a poison dart flies out of a concealed hole. You roll the dice to avoid it, but you only h... (more) |
— | 12 months ago |
| Comment | Post #285681 |
Thanks. How can you rewrite the Generalized Vandermonde's Identity with a Summation Index, and Upper and Limits of Summation like Rothe-Hagen Identity? (more) |
— | about 2 years ago |
| Comment | Post #285670 |
I have, but I haven't found an expatiation of multiplication vs. addition. Most books merely present the rule and expect you to memorize it. (more) |
— | over 2 years ago |
| Comment | Post #285596 |
Thanks. Can you pls elaborate why this hitch doesn't happen on Stack Exchange, as far as I know? (more) |
— | over 2 years ago |
| Comment | Post #285443 |
Completed. I just edited my post. (more) |
— | over 2 years ago |
| Comment | Post #284218 |
How does your answer address my question? If it doesn't, please delete your answer? You expounded the algebra that I grokked, but not the proof strategy that I was asking about. (more) |
— | over 2 years ago |
| Comment | Post #283899 |
"bad English" — This is ungracious. English is not my first language. You can't deny that fluency in English is hard. Or else whole world is fluent! "basic failures of reading comprehension" — Honestly, I have no idea what you mean. Where's evidence? Which posts are you referring? "... really, it te... (more) |
— | over 2 years ago |
| Comment | Post #283899 |
I think you're referring me? No offense, but your post appears inequitable. "[tortured synonym for “know”]" — My teacher used these words. And I don't mean "know". Prognosticating a step isn't the same as KNOWING a step. I know now that GME (GameStop stock price) rocketed to $488, but I didn't progn... (more) |
— | over 2 years ago |
| Comment | Post #283387 |
I'd rather not "rephrase the issue you're having", because I want to stick to the text in the book. Have you thought of complaining to the author at blitzstein@stat.harvard.edu? (more) |
— | over 2 years ago |
| Comment | Post #283399 |
"That also means such questions probably aren't appropriate for this site; consider asking a teacher instead." This feels unmannerly? Some of us aren't wealthy enough to afford private tutors. (more) |
— | over 2 years ago |
| Comment | Post #283387 |
@Moshi I don't think "By definition" answers my question? Why not define these two probabilities the other way around? (more) |
— | over 2 years ago |
| Comment | Post #283299 |
Sorry. I think I was editing the old question, but I copypasted my draft for my new question in the wrong box. What would you like me to do? Create a new question for the the Alice question? (more) |
— | over 2 years ago |
| Comment | Post #283317 |
"For this equation to hold (in general) the exponent must be k = 0 and not k + 1 = 1". What do you mean These are equivalent. $k = 0 \iff k + 1 = 1$. (more) |
— | over 2 years ago |
| Comment | Post #282945 |
I don't think you answered by second question above on the "simple geometric interpretation"? (more) |
— | over 2 years ago |
| Comment | Post #282945 |
1. Thanks for your answer. I agree that P(A) + P(B) can $>1$, but then why can't we change the definition of probability to include all numbers $>1$? 2. "here is a simple geometric interpretation". This is just the area, correct? But how does this answer my question? (more) |
— | over 2 years ago |
| Comment | Post #283260 |
Thanks! Boy am I scatter brained! I already got one downvote here. If I keep getting downvotes, I'll construe them to mean that this question is too half-baked, and I'll delete (more) |
— | over 2 years ago |
| Comment | Post #282665 |
2. Why does "starting with the red equation would only prove that the green equation holds for odd n"? I see no thing in your last summation, or $0 \le k \le 2n + 1$ (the summation bounds) that restricts $k$ to odd integers? (more) |
— | over 2 years ago |
| Comment | Post #282665 |
Thanks. 1. How do I prove that $\{2n + 1 - k \mid k \in \{ 0,\dots,n \}\} \equiv \{n + 1,\dots, 2n + 1\}$? Undeniably, I can see that this is true if I substitute $k = 0,\dots,n$, because $2n + 1 - \color{red}0, 2n + 1 - \color{red}1, \dots, 2n + 1 - \color{red}n = 2n + 1, 2n, \dots, n + 1$. But thi... (more) |
— | over 2 years ago |
| Comment | Post #282975 |
Thanks. Can you please recapitulate and underscore my mistake? I read your answer, but I still don't see my mistake? Perhaps you are too diplomatic to chide me, but go ahead! (more) |
— | over 2 years ago |
| Comment | Post #282600 |
That question got removed, and your link no longer works. (more) |
— | over 2 years ago |
| Comment | Post #282892 |
Thanks. Can you pls elaborate why terms like $s/c^n$
will diverge instead of converging to $0$? Can you please respond in, by editing, your answer? Comment chains are cumbersome to read.
(more) |
— | over 2 years ago |
| Comment | Post #282615 |
Thanks again. 1. Can you please expound why "you can't simply substitute a variable into that kind of informal, descriptive expression"? 2. "It's not an algebraic expression, so the rules of algebra don't apply" How isn't this an algebraic expression? This is a product of variables! (more) |
— | over 2 years ago |
| Comment | Post #282873 |
Your comment doesn't construe my post charitably. "The answer to 1 was given just two paragraphs earlier." I rectified this by coloring that earlier sentence. "2 and 3 are not true" Why not? (more) |
— | over 2 years ago |
| Comment | Post #282615 |
You wrote "You started on the right track with $n(n - 1)\ldots(n - [k - 3])(n - [k - 2])(n - [k - 1])$". I just evaluated this expression at $k = 1$. Now do you understand "what the middle expression in that line is supposed to mean"? (more) |
— | almost 3 years ago |
| Comment | Post #282616 |
The issue here appears to be that the English syntax differs from the order of the terms on the RHS? I misconstrued "we could first choose the k team members" as $k$, and "then choose one of them to be captain" as $\dbinom{n}{k}$. (more) |
— | almost 3 years ago |
| Comment | Post #282614 |
I saved up these questions over a week. But I'll slow down as you ask. "I'm a bit uncertain about asking tons of questions from other sources" Huh? I see nothing with asking questions from renowned textbooks?
(more) |
— | almost 3 years ago |
| Comment | Post #282611 |
Absolutely not! Manners please? I couldn't copy and paste from the second website. (more) |
— | almost 3 years ago |
| Comment | Post #282602 |
Thanks. I fixed my typo. (more) |
— | almost 3 years ago |
| Comment | Post #281319 |
Thanks. Does my edit [to my post] change your answer? (more) |
— | almost 3 years ago |
| Comment | Post #280741 |
I posted at https://math.codidact.com/posts/280742 about the miffed Mathjax. (more) |
— | about 3 years ago |