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Rules for Posting - Please Read this Before Posting
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Bunuel
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Joined: 02 Sep 2009
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Rules for Posting - Please Read this Before Posting [#permalink] New post  Updated on: 28 Sep 2020, 09:40
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Rules for Posting - Please Read this Before Posting New Question


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Following the simple rules and suggestions below can help you, other members, and our moderators to be happier people. Yes, truly, we will all be happier! When you create mis-catagorized, or poorly-posted quant questions, it leads to confusion and diminishes the valuable forum content. It also makes our lives stressful and disorganized. However, if you follow these 12 simple suggestions, you can expect great karma, good looks, and extra points on the GMAT! If by chance that did not convince you, ignoring or breaking these rules will likely lead to removed posts, warnings, eventual bans, and a possible hair loss. Please follow the rules. Thank you!

    1. Use the Search Box Before Posting.

    - We have 30,000 questions discussed. Chances are the one you wanted to post is already there.
    - Forum Search

    2. Choose the Right Forum.

    - Please post PS questions in the PS subforum and DS questions in the DS subforum. No posting of PS/DS questions is allowed in the main Math forum.

    3. Give a Topic Name (IMPORTANT).

    - Use the first sentence of the question or a string of words exactly as they show up in the question. You get 40 characters. Use them all to help with the search & similar topics feature!

    4. Post Only one Question per Topic.

    - Please do not post multiple questions in the same post as it makes timer, search, tags, and other functions irrelevant.

    5. Do not Change the Question.

    - It is extremely important that the integrity of the original question is maintained. Remember, every word that is included in a question is there for a reason!

    6. TYPE the Question and solution in as Text.

    - Do not post pictures of questions or solutions. The only time a picture is acceptable is when a question has a diagram. If a diagram exists, make sure to always attach it using JPG/GIF/PNG formats. Do not use Word or PDF documents.

    7. Indicate the OA (Official Answer)

    - Use the A, B, C, D, E radio buttons and make sure you post the answer choices.

    8. Post Answer Choices for PS Questions

    - On the PS section one should always look at the answer choices before starts to solve a problem. They might often give a clue on how to approach the question.

    9. Use Formulas that Look Like Formulas!

    - Help us to help you. It is quite easy, and will increase the value of your questions. (See directions here: http://gmatclub.com/forum/11-rules-for- ... l#p1096628 or the discussion here: http://gmatclub.com/forum/writing-mathe ... 72468.html)

    10. Tag Your Questions.

    - At least 3 tags are required: difficulty level (in your opinion), question category, and source of the question. You are welcome to use more tags as applicable. You can also TAG other people’s posts to make them more valuable. You can see the positive results of using tags here: Data Sufficiency, Problem Solving, Critical Reasoning, Reading Comprehension, Sentence Correction. Also check our entire Question Bank by Tags.

    11. Avoid Short/Useless Posts (they will be deleted) and use the Kudos Button Instead.

    - If you choose to answer a question, please answer only if your post adds value. Saying “+1 A”, "Awesome solution!" or “Great Question!” does not. Pressing the Kudos button does.

    12. ONLY Questions from Reliable GMAT Sources are Allowed on the Forum!

    - Please do NOT post questions from random math books and web sites. Please do not post your self-made questions in PS/DS forums, use this topic instead: Users' Self-Made Questions

    13. Please do NOT ask for a kudos in your posts.


    - If a post deserves a kudos it will eventually get it. Please do not ask people to give Kudos to your posts in public or private.


Thank you! We appreciate your understanding and support. Good luck on the GMAT!

Have any questions, suggestions, or ideas for this thread? Please PM the Math Forum Moderator, Bunuel.

Also check How to Write Mathematical Formulas on the Forum



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Originally posted by Bunuel on 05 Jun 2012, 02:58.
Last edited by bb on 28 Sep 2020, 09:40, edited 5 times in total.
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Bunuel
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Re: Rules for Posting - Please Read this Before Posting [#permalink] New post  Updated on: 06 Feb 2019, 10:31
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Writing Mathematical Formulas on the Forum



I think that everybody will agree that \({(\sqrt{9+\sqrt{80}}+\sqrt{9-\sqrt{80}})^2}\) is much easier to understand than (sqr root of (9 +sqr root of 80)+sqr root of (9 - sqr root 80))^2.

So, in order to help you with the questions you post more efficiently please use the following guide to write math formulas.

In most cases you'll just need to do 2-3 simple steps:

Simple Formulas


How to make 7x^2+5(x+3)>1 to look like \(7x^2+5(x+3)>1\)
Step 1: Mark 7x^2+5(x+3)>1;
Step 2: Press m button.


Fractions


How to make (x+3)/(x+5)>0 to look like \(\frac{x+3}{x+5}>0\):
Step 1: Mark the fraction (x+3)/(x+5);
Step 2: Press fraction button;
Step 3: Now, mark the whole expression and press m button.


Square roots


How to make (x+5)^(1/2)<17^(1/2) to look like \(\sqrt{x+5}<\sqrt{17}\):
Step 1: Mark x+5 and press square_root button, then mark 17 and press square_root button again;
Step 2: Now, mark the whole expression and press m button.


Other Useful Symbols



Another Way of Writing Fractions:
How to make (a+b)/c to look like \(\frac{a+b}{c}\)
Step 1: Write \frac{a+b}{c}, (note that numerator and denominator must be enclosed in { } and you must write out \frac to tell the system that it is a fraction);
Step 2. Mark the whole expression and press m button.

Exponents
How to make x^12 to look like \(x^{12}\)
Step 1: Write x^{12}, (note that multi-digit powers must be enclosed in { });
Step 2. Mark the whole expression and press m button.

Roots
How to make 3rd root of x^2 to look like \(\sqrt[3]{x^2}\)
Step 1: Write \sqrt[3]{x^2}, (note that 3 must be enclosed in [ ] and 2 must be enclosed in { });
Step 2. Highlight the whole expression and press m button.

Inequalities
\(x\approx{3}\): write x\approx{3} and press m button (note that 3 must be enclosed in { }).
\(x\leq5\): write x\leq{5} and press m button.
\(x\geq3\): write x\geq{3} and press m button.
\(x\neq0\): write x\neq{0} and press m button.

Subscript
\(x_1\): write x_1 and press m button. If a subscript is more than one-digit number, for example \(x_{15}\) then write x_{15} and press m button (note that such kind of subscripts must be enclosed in { }).

Geometry
\(\pi\): write \pi and press m button;
\(\angle\): write \angle and press m button;
\(90^{\circ}\): write 90^{\circ} and press m button;
\(\alpha\): write \alpha and press m button;
\(\triangle\): write \triangle and press m button.


Full reference link for the extra curious: http://en.wikibooks.org/wiki/LaTeX/Mathematics#Math_operators

In case of Any Questions Please Post them Here: http://gmatclub.com/forum/writing-mathe ... 68-20.html or PM the Math Forum Moderator, Bunuel.
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New to the GMAT CLUB Forum?
Posting Rules: QUANTITATIVE | VERBAL. Guides and Resources: QUANTITATIVE | VERBAL | Ultimate GMAT Quantitative Megathread | All You Need for Quant

Questions' Banks and Collection:
PS: Standard deviation | Tough Problem Solving Questions With Solutions | Probability and Combinations Questions With Solutions | Tough and tricky exponents and roots questions | 12 Easy Pieces (or not?) | Bakers' Dozen | Algebra set | Mixed Questions | Fresh Meat
DS: DS Standard deviation | Inequalities | 700+ GMAT Data Sufficiency Questions With Explanations | Tough and tricky exponents and roots questions | The Discreet Charm of the DS | Devil's Dozen!!! | Number Properties set | New DS set
MIXED: GMAT Club's Complete Questions' Bank | SEVEN SAMURAI OF 2012 | Tricky questions from previous years. | Special Questions' Directory | Best Of The Best Of 2017 | The Best Of Quant of 2016 | 20 hardest and 20 best questions of 2015 | 15 best topics of 2015 | Seven Samurai of 2012 | GMAT Probability Questions

What are GMAT Club Tests?
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Originally posted by Bunuel on 14 Jun 2012, 05:54.
Last edited by Bunuel on 06 Feb 2019, 10:31, edited 4 times in total.
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Mahmud6
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Joined: 10 Mar 2013
Status:The best is yet to come.....
Posts: 471
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Re: Rules for Posting - Please Read this Before Posting [#permalink] New post  05 Aug 2017, 18:05
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To embed fractions within fractions:

How to make ((x/4)/d) to look like \(\frac{\frac{x}{4}}{d}\) OR (x/(4/d)) to look like\(\frac{x}{\frac{4}{d}}\)

Step 1: Write \frac{\frac{x}{4}}{d} OR \frac{x}{\frac{4}{d}}
Step 2. Highlight the whole expression and press m button.
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