Activity for General Sebast1anâ€
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
| Edit | Post #286808 | Initial revision | — | over 2 years ago |
| Question | — |
What's the common ratio for this geometric sequence? Delayed learning some math, now I'm back at it. Geometric sequences. Basically a sequence where it has a common ratio. An example: ``` Sequence = {14, 28, 56, 112} Ratio = 2 Proof = 14 2 2 2... ``` You can see where I'm going with this. In my previous sequence question, I asked ... (more) |
— | over 2 years ago |
| Comment | Post #286709 |
@#36356 Maybe they *are* "intermediate terms", but remember, they are in between two values, making them means. If they have a common difference, then they form an arithmetic sequence, hence given the name "arithmetic means". Maybe they're both correct. (more) |
— | over 2 years ago |
| Edit | Post #286711 | Initial revision | — | over 2 years ago |
| Answer | — |
A: What are the 2 arithmetic means of $x + y$ and $4x - 2y$? I think I got it. > TL;DR: The answer is $2x$ and $3x-y$. Apparently, since I was doing this at a state of "hard-thinking", I wasn't able to put much of this into mind simply because my brain was too exhausted with the problems, so I basically gave up when 2 letters on both sides showed up. ... (more) |
— | over 2 years ago |
| Edit | Post #286709 |
Post edited: |
— | over 2 years ago |
| Comment | Post #286709 |
@#36356 That's literally the term used in the book. And also, I just found the definition at the end of the module.
> Arithmetic means - terms $m_1$, $m_2$, $\dots$, $m_k$ between two numbers $a$ and $b$ such that $a$, $m_1$, $m_2$, $\dots$, $m_k$, $b$ is an arithmetic sequence.
So I did get it... (more) |
— | over 2 years ago |
| Edit | Post #286709 | Initial revision | — | over 2 years ago |
| Question | — |
What are the 2 arithmetic means of $x + y$ and $4x - 2y$? I'm currently learning arithmetic sequences, and I've gotten to the means. I'm answering an activity as a test to see if what I'm doing is right. Here's an example through format: ``` First term = 10 Last term = 40 Arithmetic means = 5 Answer = {15, 20, 25, 30, 35} ``` I'm sure means wo... (more) |
— | over 2 years ago |
| Comment | Post #284773 |
Now *that*'s the kind of answer I'm looking for. (more) |
— | almost 3 years ago |
| Comment | Post #284723 |
Welp, I tried. At least I gave what I want to reach. (more) |
— | about 3 years ago |
| Edit | Post #284723 |
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— | about 3 years ago |
| Edit | Post #284723 |
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— | about 3 years ago |
| Comment | Post #284723 |
@#53410 I think I got the gist. Seems clearer enough now. (more) |
— | about 3 years ago |
| Edit | Post #284723 |
Post edited: |
— | about 3 years ago |
| Edit | Post #284723 | Initial revision | — | about 3 years ago |
| Question | — |
Can we add without using addition? Is there a formula that applies $a + b = c$ without addition. I tried many times to make such equation. Here's what I have in mind, we get 2 values, call them $a$ and $b$. The objective is to get the sum, without using addition at all. What does "no addition" mean here? Basically, you can't use th... (more) |
— | about 3 years ago |
| Comment | Post #283947 |
Man, that's a great explanation that I peed my pants from it. Thanks for the explanation, it really helps! (more) |
— | about 3 years ago |
| Edit | Post #283945 |
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— | about 3 years ago |
| Edit | Post #283945 |
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— | about 3 years ago |
| Edit | Post #283945 | Initial revision | — | about 3 years ago |
| Question | — |
What're the orders for equation expressing? When doing an equation in programming or real calculations, equation expression takes in a specific order. In a single equation, I use the PEMDAS/GEMDAS order, which goes: - Perform all operations that are grouped up by parentheses first before non-grouped ones; the more it's grouped will be perfo... (more) |
— | about 3 years ago |
| Edit | Post #283300 |
Post edited: |
— | about 3 years ago |
| Edit | Post #283300 | Initial revision | — | about 3 years ago |
| Answer | — |
A: Is replacing the entire question with a different one appropriate? I think for the whole network, no such thing is supposed to be allowed. You make a question, then edit it if you think something in place looks wrong, or you made a typo. Just let it be that way, the same question. Then, in some scenario, either the post got deleted then undeleted, or maybe clo... (more) |
— | about 3 years ago |
| Comment | Post #282375 |
Understandable. Have a great day. (more) |
— | over 3 years ago |
| Edit | Post #282286 | Initial revision | — | over 3 years ago |
| Question | — |
Are challenge-like questions like these considered on-scope in Mathematics CD? I have this now-deleted question and here's what's it all about. For every single answer, a different $y$ would be used to exponentiate $x$. The question revolves getting $x^y$ using $(x-1)^y$ and something to add at it. I already added an answer in it for $x^2$ so that when it's restored, you guy... (more) |
— | over 3 years ago |
| Edit | Post #282279 | Initial revision | — | over 3 years ago |
| Answer | — |
A: What formula can get $x^y$ by using $(x-1)^y$ as a base? $x^2$ For this one, use $1$ as base and keep it as $1^2$. To get $x+1^2$, you can simply use the equation $x^2 = (x - 1)^2 + (x 2 - 1)$. For example, getting $3^2$ is as follows: $$ 3^2 = (3 - 1)^2 + (3 2 - 1) $$ $$ 3^2 = 4 + (6 - 1) = 4 + 5 $$ $$ 3^2 = 9 $$ (more) |
— | over 3 years ago |