Home Is Where The Wind Blows

An immortal fumble by Androcles (20-Jun-2004)

Square roots revisited -- a MEGA META-Fumble!
| > | So you *are* serious about it:
| > |   http://users.telenet.be/vdmoortel/dirk/Physics/Fumbles/NegSqrt.html
| > | What a shame - I really thought you had at least *something*
| > | going for you.
| > |
| > | Welcome in the club of Androcles:
| > |   http://users.telenet.be/vdmoortel/dirk/Physics/Fumbles/SqrtAnswers.html
| > | and Ken Seto:
| > |   http://users.telenet.be/vdmoortel/dirk/Physics/Fumbles/SquareDiff.html
| > |   http://users.telenet.be/vdmoortel/dirk/Physics/Fumbles/NegSquareRoot.html
| > |
| > | Dirk Vdm
| > 
| > You are not welcome in my club, Dinky. Join your own.
| >   "sqrt(x^2) = -x for all x <= 0" - Dvm.
| >     http://www.androc1es.pwp.blueyonder.co.uk/Dinkyfumblezero.htm
| > Of course I always knew you had nothing going for you.
| > 
| > Androcles.
|
| So let's take an x <= 0, namely x = -9
| Then we have:
|     sqrt( x^2 ) = sqrt( (-9)^2 ) = sqrt(81) = 9 = - (-9) = - x
| Wrong?
|
| And let's take another one, namely x = 0
| Then we have:
|     sqrt( x^2 ) = sqrt( (0)^2 ) = sqrt(0) = 0 = -0 = - x
| Wrong?
|
| You really think this is wrong:
|     sqrt(x^2) = x for all x >= 0
|     sqrt(x^2) = -x for all x <= 0
| ?
|
| Dirk Vdm

"-sqrt(4) = -2" - Vdm
"sqrt(x^2) = -x" - Vdm
Priceless....
Androcles
ROFLMAO!
 Fumble Index  Original post & context: guwBc.1580$eg4.13881472@news-text.cableinet.net

 See also


http://users.telenet.be/vdmoortel/dirk/Physics/Fumbles/PythagoRescue.html
http://users.telenet.be/vdmoortel/dirk/Physics/Fumbles/NegSqrt.html
http://users.telenet.be/vdmoortel/dirk/Physics/Fumbles/SqrtAnswers.html

nEzBc.1674$QT5.15167683@news-text.cableinet.net
ANDBc.1868$Vc.17142921@news-text.cableinet.net
5bEBc.1887$lu.17393881@news-text.cableinet.net
hkEBc.1906$1A.17496343@news-text.cableinet.net
P8RBc.2526$hh7.22565087@news-text.cableinet.net
3zRBc.2543$Cn7.22616176@news-text.cableinet.net
m3VBc.2691$gj1.24022121@news-text.cableinet.net