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# What's -2^2 watch

1. Eier and Totally Tom are correct. Otherwise my quadratic doesnt make sense and exam questions aren't often wrong.
2. The answer is Gary. This is all.
3. Maths people:

So whats the integral between infinity and zero of e^[-(x^2)]? Easy convert to polars, do the double integral over dr and d(theta)...gives you root pi on two

And the negative of two squared? errrrrrrrr....hmm
4. 5...
5. look at the context though - it's -2 going into a quadratic so it would be (-2)^2 rather than the alternative -(2^2)
Seriously -- who gives a ****? I'm being honest. I know that my post isn't helpful, but this is one of these controversial topics. Do you not understand, OP, that you will NOT get a definite answer. Even people on TSR can't, and we're supposedly the 'top notch students'.
The definite answer is -4. This thread annoys me. I prefer term time...
7. Normally I'd suggest making a poll but then that would probably give us the wrong answer.

-4 from a fourth year university mathematician.
8. (Original post by barry_4_england)
The definite answer is -4. This thread annoys me. I prefer term time...
It's 4.
9. lol this is an absolutely immense trolling effort, good job.
10. -4
simple maths
i am shocked and horrified how many people dont know the correct answer, and indded how many are so confident in their wrong answer
11. hmm - I still say it's a unary minus but I'm now thinking (without the context) that that could apply to the result of the exponentiation, and that being the case I can certainly see how it could be taken in two ways. However once you've got the context I don't see any ambiguity

Apologies if I jumped in a bit quick there
12. (Original post by jennyng2000)
-4
simple maths
On my second post, i put it into context, it's 4.
In context, which wasn't originally clear but was quickly explained by the OP....substituing -2 into a quadratic for a graph, -2 into x^2 gives 4.
14. (Original post by LearningMath)
It's 4.
It's not. .
15. (Original post by LearningMath)
On my second post, i put it into context, it's 4.
am i missing something? minus 2 times 2, ie -2 x 2, is -4
how is that wrong?
16. (Original post by LearningMath)
On my second post, i put it into context, it's 4.
You're not substituting -2 into x^2 - you should be substituting 2 into -x^2 which is, of course, negative.
17. i.
18. (Original post by Gaz031)
You're not substituting -2 into x^2 - you should be substituting 2 into -x^2 which is, of course, negative.
weeeeee here we go again!
19. Okay, I'm closing this. I can't see everybody coming to a conclusion any time soon.

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Updated: August 25, 2008
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