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Show HN: I built a math website the internet loved, I'm back with more features

teachyourselfmath.app

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Re: Show HN: I built a math website the internet loved, I'm back with more features

#11

Post by viveknathani_ »

franciscop wrote: post #10

Are you interested in using https://vector-graph.com/ to add math diagrams? I created it exactly for this kind of websites and I'd be happy to waiver the fee for your site!

wow! this seems amazing. let me chalk out the roadmap for this site and reach out to you accordingly. thank you for your interest!

Re: Show HN: I built a math website the internet loved, I'm back with more features

#13

Post by namanyayg »

franciscop wrote: post #10

Are you interested in using https://vector-graph.com/ to add math diagrams? I created it exactly for this kind of websites and I'd be happy to waiver the fee for your site!

so beautiful :) how much time did it take to build?

Re: Show HN: I built a math website the internet loved, I'm back with more features

#14

Post by n4r9 »

Nice work. Out of curiosity, how is the difficulty determined? I notice that some of the "hard" questions (inverting a 2x2 matrices or differentiating common functions) are much easier than others (proving that no natural number has Euler totient equal to 14).

Re: Show HN: I built a math website the internet loved, I'm back with more features

#15

Post by viveknathani_ »

n4r9 wrote: post #14

Nice work. Out of curiosity, how is the difficulty determined? I notice that some of the "hard" questions (inverting a 2x2 matrices or differentiating common functions) are much easier than others (proving that no natural number has Euler totient equal to 14).

hi! right now, it is manually assigned after parsing the problems. i am figuring out a relative system for assigning difficulty automatically.

Re: Show HN: I built a math website the internet loved, I'm back with more features

#17

Post by n4r9 »

viveknathani_ wrote: post #15
n4r9 wrote: post #14

Nice work. Out of curiosity, how is the difficulty determined? I notice that some of the "hard" questions (inverting a 2x2 matrices or differentiating common functions) are much easier than others (proving that no natural number has Euler totient equal to 14).

hi! right now, it is manually assigned after parsing the problems. i am figuring out a relative system for assigning difficulty automatically.

I don't envy you the task! You've probably thought about it a lot more than me, but I was wondering if you could add a "very hard" or "advanced" category. Or perhaps users could submit difficulty ratings as a percentage and you take the average.

Re: Show HN: I built a math website the internet loved, I'm back with more features

#18

Post by franciscop »

namanyayg wrote: post #13
franciscop wrote: post #10

Are you interested in using https://vector-graph.com/ to add math diagrams? I created it exactly for this kind of websites and I'd be happy to waiver the fee for your site!

so beautiful :) how much time did it take to build?

Thanks! I made it 2-3 years ago and IIRC it took me few months of weekend work; the things is that it was "easy" in the beginning, but for each combination of "feature" + "drawing type" things got a lot more complex, specially later on. e.g. when adding the option to shift the grid, or scale it, then I needed to change all of the drawing methods; or when I add a new drawing method, then it needs to work with all the other configs. So a lot of the code is basically dealings with these cases.

It also has a lot of logic trying to position things so that they look nice, specially around the axis arrows/numbers (since any overflow off the SVG would be cut off).

Re: Show HN: I built a math website the internet loved, I'm back with more features

#19

Post by antinone »

cool.

highly recommend to implement the review exercise style of https://www.executeprogram.com/!, both the UI, albeit with better theming (https://monkeytype.com/), and the spaced repition feature, all while keeping the hn styled comment section, although i'd let none-related comments run horizontally to click through different approaches/explanation(-styles).

you got a startup there. keep it affordable. 5 bucks a month after u get a propper UI and spaced repetition with different numbers integrated.

great, simple, idea! let the copycat-wars begin :D

Re: Show HN: I built a math website the internet loved, I'm back with more features

#20

Post by ktallett »

n4r9 wrote: post #14

Nice work. Out of curiosity, how is the difficulty determined? I notice that some of the "hard" questions (inverting a 2x2 matrices or differentiating common functions) are much easier than others (proving that no natural number has Euler totient equal to 14).

IMO, I think in the grand scheme of things proofs are always tricky so it generally would be in a higher difficulty no matter the problem. However in the category of number theory, that would be say an easier proof than some others.
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