If you don't know the answer you're too stupid to use the site

[Ignis Fatuus]

If you think some captchas are hard to read, try the signup page for this site for a hard question to verify that you are a human:

Quantum Random Bit Generator Service





PS kudos for using my link to fetch the site title, instead of just using the URL as text.

[Doggy Styles]

zeitghost could get that right but it doesn't verify he's human.

Plus any number of daleks.

Security lapses like that could open us up to world domination.

[TimberWolf]

Quantum Random Bit Generator Service: Sign up
Congratulations! You have successfully registered for QRBG Service.

Now, you can log in and check your quota and usage statistics, or just start using the Service.

[TimberWolf]

Presumably one could download terrabytes of random numbers and check out the non-deterministic nature of photonic emission in semiconductors and subsequent detection by photoelectric effect for oneself. Einstein could have had a field day.

But an inner voice tells me that it is not yet the real thing. The theory says a lot, but does not really bring us any closer to the secret of the "old one." I, at any rate, am convinced that He does not throw dice.

--Uncle Albert.

[OwlHoot]

If you think some captchas are hard to read, try the signup page for this site for a hard question to verify that you are a human:

Quantum Random Bit Generator Service

PS kudos for using my link to fetch the site title, instead of just using the URL as text.

I managed to sign up, but not sure what to.

Would I be right in thinking I'll now be bombarded with spam comprising, literally, random numbers?

[DimPrawn]

sas, give us a hand mate!

[xoggoth]

I could maybe answer that as still have a lot of maths books on my office bookshelf. Or perhaps not as I may not understand them anymore, I just leave them there because they look impressive.

[d000hg]

sas, give us a hand mate!

Dunno if the x=0 signifies anything special - just the value to input? The plain differential is surely easy enough even for Sas though?

(4.cos(2x - PI/2) - 12.sin(3x))


And the answer is a bit of an anticlimax.

Also, wolfram can answer it I bet... oh.

[Churchill]

Ok, now I've got the data, wtf should I do with it?

Anybody want some?

Userid is "MarillionFan"
Password is "FatBastard"

[OwlHoot]

Dunno if the x=0 signifies anything special - just the value to input? The plain differential is surely easy enough even for Sas though?

(4.cos(2x - PI/2) - 12.sin(3x))

And the answer is a bit of an anticlimax.

Also, wolfram can answer it I bet... oh.

The "x=0" is the value of x to plug into the partial derivative result which, in replying, I see you quoted in white ..

edit: Not sure if you noticed, but your result was one of the "alternative forms" at the bottom