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Best CAPTCHA ever - brad's life [entries|archive|friends|userinfo]
Brad Fitzpatrick

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Best CAPTCHA ever [Jul. 19th, 2007|10:52 am]
Brad Fitzpatrick
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A CAPTCHA gives you a little test to see if you're human, not a computer auto-generating accounts.

You know, this sort of crap:

But these guys have a way better one:

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Comments:
[User Picture]From: zarex
2007-07-19 09:44 pm (UTC)

Re: Spelling it out ...

You missed a factor on the derivative. D[ sin(ax) ] = a*cos(ax) . Remember D[ sin(u) ] = cos(u)du . See my solution above.
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