Quantcast

A community for students. Sign up today!

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

Loser66

  • one year ago

new one

  • This Question is Closed
  1. Loser66
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    \[[\large \log \sqrt{x^2+y^2}]' = \dfrac{1}{\sqrt {x^2+y^2}} \times \dfrac{d}{dx}(\sqrt{x^2+y^2}) \\ \large = \dfrac{1}{\sqrt {x^2+y^2}} \times \dfrac{1}{2 \sqrt{x^2+y^2}}\dfrac{d}{dx}(x^2+y^2)=....\] [\large \log \sqrt{x^2+y^2}]' = \dfrac{1}{\sqrt {x^2+y^2}} \times \dfrac{d}{dx}(\sqrt{x^2+y^2}) \\ \large = \dfrac{1}{\sqrt {x^2+y^2}} \times \dfrac{1}{2 \sqrt{x^2+y^2}}\dfrac{d}{dx}(x^2+y^2)=....

  2. Loser66
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    \[[\large \log \sqrt{x^2+y^2}]' = \frac{1}{\sqrt {x^2+y^2}} \times \frac{d}{dx}(\sqrt{x^2+y^2}) \\ \large = \frac{1}{\sqrt {x^2+y^2}} \times \frac{1}{2 \sqrt{x^2+y^2}}\frac{d}{dx}(x^2+y^2)=....\] [\large \log \sqrt{x^2+y^2}]' = \frac{1}{\sqrt {x^2+y^2}} \times \frac{d}{dx}(\sqrt{x^2+y^2}) \\ \large = \frac{1}{\sqrt {x^2+y^2}} \times \frac{1}{2 \sqrt{x^2+y^2}}\frac{d}{dx}(x^2+y^2)=....

  3. hartnn
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    same syntax ? no... the first one is \dfrac and 2nd is just \frac \(\dfrac{test}{this }\) `\(\dfrac{test}{this }\)` compared to \(\frac{test}{this }\) `\(\frac{test}{this }\)`

  4. hartnn
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    i can see the first one having bold line

  5. thomaster
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Stange,, the first one is bold here, the second one not while 1 minute ago it was first normal second bold 0.o

  6. Loser66
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    \[\dfrac{dummyme}{dontknowhowtodo}\]\[\frac{needtimetopractice}{nodumbanymore}\]

  7. hartnn
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    zoom in your page to see the difference

  8. Loser66
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yup, different . thanks

  9. Loser66
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    thank you.

  10. Loser66
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    @thomaster after a long time of writing, nothing pops up, why?

  11. thomaster
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    I was trying if I could make a bold division bar with normal numerator and denominator :P

  12. Loser66
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    \[\huge\dfrac{\frac{aaaaaaa}{bbbbbbbbb}}{\frac{ccccccccccccccc}{ddddddddddddd}}\] hihihihi.... quite clear, right/

  13. thomaster
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    you can make the middle division bar longer by adding some spaces \(\huge\dfrac{~\dfrac{a}{b}~}{\dfrac{c}{d}}\)

  14. thomaster
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    `\(\huge\dfrac{~\dfrac{a}{b}~}{\dfrac{c}{d}}\)`

  15. Loser66
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    1~ just a little bit longer, what if I want to make it loooooonger?

  16. thomaster
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    \(\huge\dfrac{~~~~~~~\dfrac{a}{b}~~~~~~~}{\dfrac{c}{d}}\)

  17. hartnn
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    \(He \quad hi\) `\(\dfrac{test}{this }\)` use \quad for longer spaces

  18. hartnn
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    `\(He \quad hi\)`

  19. thomaster
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    or `\hspace{20pt}` you can make the space as long as you want by changing the 20

  20. Loser66
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    \[He\hspace{50pt} hi\]yep, gotit

  21. Loser66
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    \[\left[\begin{matrix}a & b \\ c & d\end{matrix}\right] *\left[\begin{matrix}a&b\\c&d\end{matrix}\right]=\left[\begin{matrix}-1&0\\0&-1\end{matrix}\right]\]

  22. Loser66
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    I practice, hihi

  23. Loser66
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    how to make -/+ in order?

  24. thomaster
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    \(\Large \pm\) ??

  25. thomaster
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    more symbols: http://omega.albany.edu:8008/Symbols.html

  26. caozeyuan
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    thanks! It helps, amistre64 's explanation sucks!

  27. Loser66
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    I saw someone posted something and had a code at the middle of the text without taking another line, for example: sin\theta = \frac {1}{5}. but I don't know how to do. When I write, it always jumps into the next line. Show me, please @e.mccormick

  28. e.mccormick
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Bla bla \(\backslash (\)some latex\) bla bla. That type inline?

  29. Loser66
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    e.mccormick is sin\(\theta\) and I got it \(\text {thank you}\)

  30. e.mccormick
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Kk. Have fun!

  31. Loser66
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    you too

  32. Loser66
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    and how to make it be bold

  33. e.mccormick
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    This is where \tfrac{}{} and \dfrac{}{} can also help. \tfrac{}{}, Text Fraction, means to make it small, like inline text, no matter what. \dfrac{}{}, Display fraction, means make it large, like it was a stand alone equation, no matter what. This line is with \(\frac{1}{2}\) just \frac{}{} This line is with \(\tfrac{1}{2}\) just \tfrac{}{} This line is with \(\dfrac{1}{2}\) just \dfrac{}{} This block is with \[\frac{1}{2}\] just \frac{}{} This block is with \[\tfrac{1}{2}\] just \tfrac{}{} This block is with \[\dfrac{1}{2}\] just \dfrac{}{} Notice that the frac changes if it is inline or in a block, \(\backslash\)[ BLOCK \]. But the dfrac and tfrac do not.

  34. e.mccormick
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Fonts use \mathbb{text}, \mathbf{text}, \mathit{text}, and so on. http://www.codecogs.com/eqneditor shows them all at the top.

  35. Loser66
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    let me practice \(\tfrac{you}{me}\) and \(\dfrac{you}{me}\) how about \(\frac {you}{me}\)

  36. Loser66
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    the first and the last are the same, right?

  37. e.mccormick
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    The math fonts are for equations, but same ones are there for text. here is why: \textbf{Some text with spaces} \(\textbf{Some text with spaces}\) \mathbf{Some text with spaces} \(\mathbf{Some text with spaces}\) See the spaces and what happens to them in math mode?

  38. Loser66
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    I can see the difference. b stands for bold?

  39. e.mccormick
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Yes, the first and last are the same. Where the [d|t]frac comes in really handy is when you need to make sure one is a large fraction inside another fraction. Or small, and so on. Large inline with text, so it is clear...

  40. e.mccormick
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    BoldFace ITalics BlackBoard RoMan TextwriTer

  41. e.mccormick
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Not all of them are supported, like \textsc fails with MathJax.... SmallCaps.

  42. Loser66
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    \(\textbf{get nothing, hehe}\) \(\text{now, get a lot, hihi}\)

  43. e.mccormick
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    The link is an editor interface.

  44. e.mccormick
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    With the t/d fracs you can do \(\dfrac{d}{dx}\left( \dfrac{\dfrac{\tfrac{\pi}{4}+e^x}{x^e}}{14x^6+12x^3-7i}\right )\) inline and it is still readable.

  45. caozeyuan
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    what are you guys talking about, I cannot understand a word!

  46. e.mccormick
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @caozeyuan We are talking about \(\LaTeX\). @Loser66 Attached is what I was saying about the safety bar was attached wrong.

  47. caozeyuan
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @e.mccormick so how can I use it in everyday life e.g. when writing an email or a doc. ?

  48. e.mccormick
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    \(\LaTeX\) has many editors, which make it great for writing papers, books, and so on. Especially ones with formulas and graphs. In fact, I linked one in another post recently.

  49. caozeyuan
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Tag me Please! I want to get that! is it for free?

  50. e.mccormick
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Near the bottom of this is a PDF with vectors, all done in \(\LaTeX\) http://openstudy.com/study#/updates/51ed5575e4b00daf471999bb And here is a bit on using the codes to do posts here. http://openstudy.com/study#/updates/51d89020e4b041c5c27459bb The same MathJax plugin can be added to blogs and other sites to do similar things elsewhere.

  51. e.mccormick
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Yes. \(\LaTeX\) is free. For doing papers, I use MiKTeX on Windows as my TeX rendering engine and TeXmaker as my editor. However, to just try it for free you can use one of the online ones. https://www.writelatex.com/ http://www.codecogs.com/latex/eqneditor.php (Equations only, but makes them into grapics!) http://www.scribtex.com/ https://www.sharelatex.com/

  52. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Ask a Question
Find more explanations on OpenStudy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.