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Oddly enough, I don't think it's that great a CAPTCHA for a computer.
- Rob H.
OMG - I was trying to figure out a compound interest problem last night and the formula look a lot like this. I would FAIL BAD on this CAPTCHA.
- Martha
I think the answer's 0 despite what the math whizzes in the thread say.
- Jim #TeamMonique
That's one site I won't be joining. :(
- Jack&Cleo
Jim, once you hit calculus, the answers are all either zero or infinity. :-)
- Ordinarybug Heather
My son has dyscalculia, and I worry about math-based captchas for this reason. There is always someone who is being excluded by these tests of our humanity!
- Patricia F. Anderson
If you're not good at math, you probably won't be signing up for a Quantum Random Bit Generator Service.
- Rob H.
Actually, it's a trick question. The answer is "mandatory".
- vijay
14. ... 7*6 cos (6x) - 7*4 (sin 7x + pi/2) at x = 2pi ... and cos (multiples of 2 pi) = 1, sin (multiples of 2 pi) = 0, sin (multiples of 2 pi + pi/2) = 1, so ... 7*6 - 7*4 = 14
- Mitchell Tsai
I'm glad I forgot how to do this kind of math soon after I graduated!
- Craig Eddy
Just found out I'm not human :(...Cannot answer the darn thing! :)
- Joel Reyes
@Joel. I think that's the point. If you get the correct answer, you're obviously not a human!
- In Search of Gender
Can't I just copy and paste that into Maple or Mathematica?
- Robin Barooah
Do you think you need prove that you are a human ?
- xuzepei
@Scott,just my humor :). I think @ Mitchell has the answer :)
- Joel Reyes
Well.....I can't solve it. I'm not human either.
- J. D. Ebberly
Oh my, this means people need to have at least a Calculus background! What happens for those who have forgotten calculus? Perhaps someone is or has worked on an automatic math bot that can read and answer this?
- Alvin
After about five refreshes you get a simple addition/multiplication problem.
- Rob H.
lovely :) i wish there were more CAPTCHAs like this...! internet would become an esoteric gathering of excessively bright and resourceful humans!!
- Hayk
Typing in 0, 14 or mandatory???? really Hayk :)
- Roberto Bonini