# Proof that the squareroot of -i is 17.Watch

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16 years ago
#81
(Original post by bono)
the square root of a negative number does not exist. i dont see how u can argue it.
But it does exist. We have made it so that it exists. Just like any other number. Since the square root of -1 has no real equivalent, mathematicians have had to create i. Centuries ago 0 didn't exist, but the Hindus 'discovered' it. The irrationals didn't exist but we made them so.
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16 years ago
#82
anyway, gotta go. nice chatting.

goodnight everyone.

PS: Good luck to those doing P2 exams tomorrow.
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16 years ago
#83
(Original post by ZJuwelH)
But it does exist. We have made it so that it exists. Just like any other number. Since the square root of -1 has no real equivalent, mathematicians have had to create i. Centuries ago 0 didn't exist, but the Hindus 'discovered' it. The irrationals didn't exist but we made them so.
right, so all my teachers and maths textbooks r wrong now.
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16 years ago
#84
(Original post by bono)
but the law says that the square root of a negative number does not exist.

i dont then understand how u can then say it does exist for special cases.
Which law is this? I've never heard of such a law. Something exists as long as it has a definition, which the square root of a negative number clearly does. It is the same definition as the square root of a positive number. It is the number such that when multiplied by itself, it yields the negative number in question. Whether or not you use the imaginary (i) notation to deal with square roots of negative numbers is irrelevant, the fact is that the concept exists, so they 'exist'.
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16 years ago
#85
(Original post by bono)
right, so all my teachers and maths textbooks r wrong now.
No I never even implied that.

Your primary school teachers never taught you to integrate, so which is wrong, integration or your primary school teachers?
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#86
Indeed, what's the squareroot of 2? 1.41...? No, well, that's an approximation. The squareroot of 2 is the number which when multiplied by itself equals 2.
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16 years ago
#87
(Original post by fishpaste)
Indeed, what's the squareroot of 2? 1.41...? No, well, that's an approximation. The squareroot of 2 is the number which when multiplied by itself equals 2.
Hence surds.
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16 years ago
#88
(Original post by rahaydenuk)
Which law is this? I've never heard of such a law. Something exists as long as it has a definition, which the square root of a negative number clearly does. It is the same definition as the square root of a positive number. It is the number such that when multiplied by itself, it yields the negative number in question. Whether or not you use the imaginary (i) notation to deal with square roots of negative numbers is irrelevant, the fact is that the concept exists, so they 'exist'.
I think he has been reading too many Judge Dredd comic books.
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16 years ago
#89
(Original post by fishpaste)
Indeed, what's the squareroot of 2? 1.41...? No, well, that's an approximation. The squareroot of 2 is the number which when multiplied by itself equals 2.
Yes just like theres no way to right out root2 in digits, you cant write out root -1, it is depicted as i.
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16 years ago
#90
(Original post by rahaydenuk)
Which law is this? I've never heard of such a law. Something exists as long as it has a definition, which the square root of a negative number clearly does. It is the same definition as the square root of a positive number. It is the number such that when multiplied by itself, it yields the negative number in question. Whether or not you use the imaginary (i) notation to deal with square roots of negative numbers is irrelevant, the fact is that the concept exists, so they 'exist'.
Exactly.
It seems that bono is rather obsessed by continuing to believe the rather small simplified portion of plato's world that he's been exposed to.

Don't even bother trying to tell him there's an inherent inaccuracy in his calculator either!

Alaric.
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16 years ago
#91
(Original post by bono)
the square root of a negative number does not exist. i dont see how u can argue it.

Don't you want to be a physicist? Better get your head stuck into some maths books!
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16 years ago
#92
(Original post by hitchhiker_13)
Don't you want to be a physicist? Better get your head stuck into some maths books!
Well quite, how he could grasp quantum mechanical tunnelling without complex numbers is beyond me!

Alaric.
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16 years ago
#93
to the ancient ancient greeks (before their mathematical revolution), noninteger cvalues did not exist. they couldn't get their head around concepts like half or quater of something. to them numbers were just a way of counting things, like sheep in their field, so they didn't have a concept of half a sheep. they also didn't have a concept of 0 or negative integers..... if someone had come along demonstrating fractions, they would have said he was having a laugh and such "imaginary" numbers did not exist

to the 17th century mathematicians, they didn't have a concept of imaginary numbers, to them the squareroot of a negative number did not have a root. such a number was "imaginary" like fractions were to the ancient ancient greeks. unfortunately the term "imaginary" has stuck, an that is probably the drawback to helping people understand that theyu are no less real than "real" numbers.
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16 years ago
#94
seeing as we're all slowly returning back to normal, i thought i would just *bump* this thread up a little.
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16 years ago
#95
http://www.uk-learning.net/t22860.html

proof that people do waste their lives
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#96
(Original post by caz)
http://www.uk-learning.net/t22860.html

proof that people do waste their lives
Yet you're the one posting. Grow up
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16 years ago
#97
(Original post by caz)
http://www.uk-learning.net/t22860.html

proof that people do waste their lives
Without the link it was proof enough
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