Math Is Fun Forum
  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

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#26 2014-07-27 02:14:14

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 15,532

Re: Square roots


“Here lies the reader who will never open this book. He is forever dead.

“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

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#27 2014-07-27 02:16:39

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,776

Re: Square roots


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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#28 2014-07-27 02:17:54

Agnishom
Real Member
From: The Complex Plane
Registered: 2011-01-29
Posts: 16,875
Website

Re: Square roots

Sorry, I missed your post.

Just square both sides of the equation in the quote twice and do the necessary transposition


'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'Humanity is still kept intact. It remains within.' -Alokananda

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#29 2014-07-27 02:18:57

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,776

Re: Square roots

Okay, very good. Now check the url but I would still use a calculator.


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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#30 2014-07-27 02:20:15

Agnishom
Real Member
From: The Complex Plane
Registered: 2011-01-29
Posts: 16,875
Website

Re: Square roots

That quartic formula is very complicated. Are you sure there is no tricks for this particular problem.

(Please do not site the teakettle principle)


'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'Humanity is still kept intact. It remains within.' -Alokananda

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#31 2014-07-27 02:21:03

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,776

Re: Square roots

There sure are tricks for it. There is a nice substitution.


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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#32 2014-07-27 02:22:35

Agnishom
Real Member
From: The Complex Plane
Registered: 2011-01-29
Posts: 16,875
Website

Re: Square roots

Then why are you not telling it?


'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'Humanity is still kept intact. It remains within.' -Alokananda

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#33 2014-07-27 02:26:31

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,776

Re: Square roots

Because you should see that what I am suggesting could not possibly work.


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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#34 2014-07-27 02:27:30

Agnishom
Real Member
From: The Complex Plane
Registered: 2011-01-29
Posts: 16,875
Website

Re: Square roots

I do not know what you're suggesting


'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'Humanity is still kept intact. It remains within.' -Alokananda

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#35 2014-07-27 02:31:13

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,776

Re: Square roots

The standard idea is y = x^2, that ain't gonna get the job done here.  And quoting the CSBF principle makes the solution clear.


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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#36 2014-07-27 02:33:24

Agnishom
Real Member
From: The Complex Plane
Registered: 2011-01-29
Posts: 16,875
Website

Re: Square roots

What principle is that?


'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'Humanity is still kept intact. It remains within.' -Alokananda

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#37 2014-07-27 02:34:40

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,776

Re: Square roots

Common Sense, Brute Force.


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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#38 2014-07-27 02:38:14

Arna
Member
From: The Polar Plane
Registered: 2014-07-23
Posts: 327

Re: Square roots

@bobbym
do you mean brute force is a principle ?


Nothing is impossible as the statement itself states I M POSSIBLE
In this realm of twisted reality,sanity is only illusion

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#39 2014-07-27 02:39:46

Agnishom
Real Member
From: The Complex Plane
Registered: 2011-01-29
Posts: 16,875
Website

Re: Square roots

bobbym wrote:

Common sense is Kaboobly Doo.

Quote that principle anyway


'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'Humanity is still kept intact. It remains within.' -Alokananda

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#40 2014-07-27 02:42:21

Arna
Member
From: The Polar Plane
Registered: 2014-07-23
Posts: 327

Re: Square roots

yes please tell the principle
@bobbym


Nothing is impossible as the statement itself states I M POSSIBLE
In this realm of twisted reality,sanity is only illusion

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#41 2014-07-27 02:42:26

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,776

Re: Square roots

do you mean brute force is a principle ?

Not exactly. The principle is this, what good does it do wasting time trying to find a shortcut? Had he used the quartic formula he would have been done already.


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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#42 2014-07-27 02:43:34

Arna
Member
From: The Polar Plane
Registered: 2014-07-23
Posts: 327

Re: Square roots

thnx
@bobbym


Nothing is impossible as the statement itself states I M POSSIBLE
In this realm of twisted reality,sanity is only illusion

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#43 2014-07-27 02:44:49

Agnishom
Real Member
From: The Complex Plane
Registered: 2011-01-29
Posts: 16,875
Website

Re: Square roots

Okay, for recreation?


'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'Humanity is still kept intact. It remains within.' -Alokananda

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#44 2014-07-27 02:47:17

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,776

Re: Square roots

Recreation is nice, sort of like watching Them. But man when you need the answer faster than the other guy you can not doodle around looking for mathematical beauty. Too bad no one got the chance to read CSBF.


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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#45 2014-07-27 02:48:32

Agnishom
Real Member
From: The Complex Plane
Registered: 2011-01-29
Posts: 16,875
Website

Re: Square roots

I do not need the answer faster. In fact, I was not asked for the answer. I was asked for the method


'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'Humanity is still kept intact. It remains within.' -Alokananda

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#46 2014-07-27 02:52:29

Arna
Member
From: The Polar Plane
Registered: 2014-07-23
Posts: 327

Re: Square roots

@agnishom
what answer?


Nothing is impossible as the statement itself states I M POSSIBLE
In this realm of twisted reality,sanity is only illusion

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#47 2014-07-27 02:53:03

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,776

Re: Square roots

That is a good one! They are always asking for the method, caring little for the answer. Well, you can take 3 months trying to find a 10 minute shortcut. Total time to solve the problem 3 months + 10 minutes. I will just use the formula, time to solve the problem 20 minutes. Now if you and I were working together at NASA and I handed in the answer in 20 minutes and you took 3  months and 10 minutes who do you think is going to get that big raise?


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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#48 2014-07-27 02:57:05

Agnishom
Real Member
From: The Complex Plane
Registered: 2011-01-29
Posts: 16,875
Website

Re: Square roots

The point is that I want to join the Math Challenge master post in Brilliant, not NASA.

Arna, do you know what the thread is about?


'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'Humanity is still kept intact. It remains within.' -Alokananda

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#49 2014-07-27 02:59:36

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,776

Re: Square roots

That is what the article was talking about. Sometimes doing what is at hand is better than trying to find the perfect solution, especially when you need the answer right now.


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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#50 2014-07-27 03:01:28

Agnishom
Real Member
From: The Complex Plane
Registered: 2011-01-29
Posts: 16,875
Website

Re: Square roots

But I *do not* need the answer right now. I already have that


'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'Humanity is still kept intact. It remains within.' -Alokananda

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