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Best CAPTCHA ever [Jul. 19th, 2007|10:52 am]
 [ Tags | funny, tech ]

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:

 Page 1 of 2 << [1] [2] >>
 From: 2007-07-19 05:58 pm (UTC) (Link)
42cos(x) - 28sin(7x + pi/2)

-28?
 From: 2007-07-19 05:59 pm (UTC) (Link)
70
 From: 2007-07-19 06:00 pm (UTC) (Link)
Guess I'm not human.
 From: 2007-07-19 06:00 pm (UTC) (Link)
I got a real easy one...

p(x) = x^2 + 2x + 1
find the real roots of the polynomial

hillarious though!
From:
2007-07-19 06:08 pm (UTC)

### 14

I got -3 * (-4) - (-2) = ?

See, I didn't need to take Calculus after all!
 From: 2007-07-19 06:11 pm (UTC) (Link)
that should be the test to prove you're Asian.
 From: 2007-07-19 06:26 pm (UTC) (Link)
That's better than a password ;)
 From: 2007-07-19 06:46 pm (UTC) (Link)
7*6*cos(12pi) - 4*7*sin(14pi + pi/2) = 42-28 = 14
 From: 2007-07-19 06:50 pm (UTC) (Link)

Quick! Write an OCR system that can grok mathematical notation!

 From: 2007-07-19 07:08 pm (UTC) (Link)
The answer is 7 you guys. I just did it in my head.
From:
2007-07-19 07:20 pm (UTC)

### possibly embarrassing myself here

I forget calculus syntax. Is that asking you to just evaluate at x=2pi?
In that case, the sin is +1 and the cos is -1 at that point, so it's just 7 - 4 = 3.
From:
2007-07-19 07:54 pm (UTC)

### Re: possibly embarrassing myself here

You mean I was only off by 4?! Not bad!
(Deleted comment)
From:
2007-07-19 07:40 pm (UTC)

### LOL!

There was a time when I could actually do the math. Now it's like a bad dream. uffff.
From:
2007-07-19 11:12 pm (UTC)

### Re: LOL!

I took 2 years of AP Calc in high school, and now, I hardly remember a lick of it!
 From: 2007-07-19 08:35 pm (UTC) (Link)
Yeah, yeah, it's funny and all, but wouldn't this be pretty simple for a computer, and pretty damn hard for most humans.