anonymous
  • anonymous
I finally published my chrome extension. What it does: -Adds a button 'Notebook' next to 'Draw' button to open up notebook -You can store pieces of text (notes) in your notebook. -You can search your notebook for a particular note. -You can insert the note into the reply. -You can import and export your notebook, to back it up or share with others. Where to get it: https://chrome.google.com/webstore/detail/open-study-notebook/nmdboeolmlhaaepahmeklccofcbbmpdc Filling up notebook: Notebooks start out with only one benign note. You can import what I have in my notebook if you'd like: ``` [{"title":"Welcome","body":"Thank you for using the OpenStudy notebook extension."},{"title":"Slope Point Formula","body":"The equation of a line with slope \\(m\\) that goes through the point \\((x_0,y_0)\\) is given by: \\[\ny-y_0 = m (x-x_0)\n\\]"},{"title":"Tangent Line Formula","body":"The equation of the tangent line to a function \\(f(x)\\) at \\(x_0\\) is given by: \\[\ny-f(x_0) = f'(x_0) (x-x_0)\n\\]"},{"title":"Definition of the Derivative","body":"The derivative of a function \\(f(x)\\) is defined as: \\[\nf'(x) = \\lim_{h\\to 0}\\frac{f(x+h)-f(x)}{h}\n\\]"},{"title":"Definition of the Limit","body":"The limit: \\[\n\\lim_{x\\to a}f(x) = L\n\\]Is defined as: \\[\n\\forall \\epsilon\\; \\exists \\delta\\;\\\\\n\\forall x\\quad 0<|x-a|<\\delta \\implies |f(x)-L|<\\epsilon\n\\]That is: \nIf I come up with an \\(\\epsilon\\) you will always be able to give me a \\(\\delta\\) such that\nWhenever \\(x\\) within your \\(\\delta\\) range, \\(f(x)\\) will be be within my \\(\\epsilo...n(x^n)' &=&nx^{n-1}\\\\\n(e^x)'&=& e^x\\\\\n(a^x)'&=& a^x\\ln(a)\\\\\n(\\ln(x))'&=& \\frac{1}{x}\\\\\n(\\sin(x))'&=& \\cos(x)\\\\\n(\\cos(x))'&=& -\\sin(x)\\\\\n(\\tan(x))'&=& \\sec^2(x)\\\\\n(\\sec(x))'&=& \\sec(x)\\tan(x)\\\\\n(\\csc(x))'&=& -\\csc(x)\\cot(x)\\\\\n(\\cot(x))'&=& -\\csc^2(x)\\\\\n\\end{array}\n\\]"},{"title":"Heaviside Function","body":"The Heaviside unit step function is defined as: \\[\nH(x)=\\begin{cases}\n0&x<0\\\\\n1&x>0\n\\end{cases}\n\\]A piecewise function can be converted to a non-piecewise using it:\n\\[\n\\begin{cases}\nf(x)&xc\n\\end{cases}\n\\quad =\\quad f(x)+[g(x)-f(x)]H(x-c)\n\\]\nProof: \\[\n\\begin{split}\n&\\begin{cases}\nf(x)&xc\n\\end{cases}\\\\\n=&\nf(x) +\n\\begin{cases}\n0&xc\n\\end{cases}\\\\\n=&\nf(x) +\n(g(x)-f(x))\\begin{cases}\n0&xc\n\\end{cases}\\\\\n=&\nf(x) +\n(g(x)-f(x))\\begin{cases}\n0&x-c<0\\\\\n1&x-c>0\n\\end{cases}\\\\\n=&f(x)+[g(x)-f(x)]H(x-c)\n\\end{split}\n\\]"}] ``` Where are notes stored? Notes are stored in a JSON array using localStorage. If you delete your localStorage without backing up your notebook, then all the notes will be gone. Firefox/Other Browsers: I dunno if I'll make a version for other browsers, because I don't really use them. You're welcome to make look at my code and make your own version. GitHub: The code is open source, so you can look at it anytime you want. https://github.com/wiogit/OpenStudyNotebook
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schrodinger
  • schrodinger
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anonymous
  • anonymous
Any feedback is appreciated.
nincompoop
  • nincompoop
It looks cool and promising. I am also trying to get rid of the long-winded coding required for latex display utilizing mathtype software. All equations may be exported or converted into MathML or varying Latex versions using the built-in translation of MathType. There will be no plug-in requirement. However, this is only beneficial for those who have MathType software installed into their Mac or Windows.
anonymous
  • anonymous
@nincompoop Can you explain a bit what you mean?

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nincompoop
  • nincompoop
I am trying to to make mathematical equations entry easier without the requirement of coding in Latex.
anonymous
  • anonymous
What about the equation editor?
nincompoop
  • nincompoop
The editor is fine. I am looking for ways to be able to enter equations faster. it is a pain to use the equation editor and it doesn't allow a carriage return (new line). There are a lot of symbols missing also. Having to just click the quadratic formula instead of entering them character by character saves a lot of trouble
anonymous
  • anonymous
I just made a note with the quadratic formula in it.
mathslover
  • mathslover
WoW , its great Wio. Excellent work. Admins of OS would surely like this
AravindG
  • AravindG
COOL !!
AravindG
  • AravindG
Its really handy :)
Koikkara
  • Koikkara
where?
anonymous
  • anonymous
It'll be really helpful. Great job. :D
anonymous
  • anonymous
that is really awsome the admins of os can't say no to that!
anonymous
  • anonymous
WOW GREAT JOB! :D
dumbsearch2
  • dumbsearch2
Amazing! :) Fantastic! :D BTW I'm @sean_anderson :)
TheSmartOne
  • TheSmartOne
Good Job. :)
Abhisar
  • Abhisar
@wio how to export/backup notebook data?
anonymous
  • anonymous
bottom left corner, note library
Abhisar
  • Abhisar
Thank you.
Abhisar
  • Abhisar
Okay, now where are the notes saved?
anonymous
  • anonymous
No, you have to back them up yourself.
anonymous
  • anonymous
Normally they're stored local storage. If that is wiped and you don't save them somewhere, then they're gone.
Abhisar
  • Abhisar
Yes, that's what I am not sure about. Where in the local storage are they stored?
anonymous
  • anonymous
Local Storage https://developer.mozilla.org/en-US/docs/Web/Guide/API/DOM/Storage#localStorage
Abhisar
  • Abhisar
oh ! so they are stored using the JSON array in local storage of browser?
TheSmartOne
  • TheSmartOne
@Abhisar you just click "Note Library" and just copy the code and save it. In case it gets wiped you take what you had saved and click back on it and paste it there to get all of your notes again.

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