Calling math gurus

[MegaVovaN]

OH HAI THERE!

How do I find a square root of two manually?
I understand how to find square root of numbers like 4096 manually (number is between 60 and 70 - 60*60 = 3600 and 70*70 = 4700) - pick and guess.

I am awaiting your responses, o leet gurus, and may your epeen++!

 

[Demon-Xanth]

1/sin(45)

 

[MyThirdEye]

^^ What he said.

 

[yuchai]

Multiply 2 by 100 (10 squared) and estimated for square root of 200
The result will be 10 times the square root of 2

 

[MovingTarget]

Originally posted by: Demon-Xanth
1/sin(45)

slide rule/trig table ftw!

 

[KayGee]

here you go :

http://math.arizona.edu/~kerl/doc/square-root.html

 

[Chris27]

Newton's method
link

 

[CPA]

Do your own damn homework!






Sorry, someone had to say it.

 

[MegaVovaN]

Originally posted by: CPA
Do your own damn homework!






Sorry, someone had to say it.

It's not HW, it's just an assignment with no grade.

/*tries to absorb info by earlier posters*

 

[TuxDave]

Originally posted by: KayGee
here you go :

http://math.arizona.edu/~kerl/doc/square-root.html

WINNAR!

 

[Tiamat]

Try any of these methods

 

[Eeezee]

I generally do the quess and check. 1.4 is too low, but 1.5 is too high, so the value is 1.4 something. Repeat for the next digit, 1.41 is too low but 1.42 is too high. Repeat again.

 

[sdifox]

Originally posted by: Eeezee
I generally do the quess and check. 1.4 is too low, but 1.5 is too high, so the value is 1.4 something. Repeat for the next digit, 1.41 is too low but 1.42 is too high. Repeat again.

Brute Force FTW

 

[newb111]

Originally posted by: Eeezee
I generally do the quess and check. 1.4 is too low, but 1.5 is too high, so the value is 1.4 something. Repeat for the next digit, 1.41 is too low but 1.42 is too high. Repeat again.

:thumbsup:

 

[edro]

Originally posted by: sdifox

Originally posted by: Eeezee
I generally do the quess and check. 1.4 is too low, but 1.5 is too high, so the value is 1.4 something. Repeat for the next digit, 1.41 is too low but 1.42 is too high. Repeat again.

Brute Force FTW

That's what I do too!

 

[BrownTown]

Originally posted by: edro

Originally posted by: sdifox

Originally posted by: Eeezee
I generally do the quess and check. 1.4 is too low, but 1.5 is too high, so the value is 1.4 something. Repeat for the next digit, 1.41 is too low but 1.42 is too high. Repeat again.

Brute Force FTW

That's what I do too!

Well I have sqrt(2) memorized, but I pretty much do this method for other things, good enough for government work!

 

[BurnItDwn]

Do it the way you were taught in grade school or middle school.
http://math.arizona.edu/~kerl/doc/square-root.html <-- pretty much spot on.