Talk:Extraneous and missing solutions: Difference between revisions

Revision as of 19:51, 18 February 2009

Revision as of 19:57, 18 February 2009

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No, this is not a sutiable example of an extraneous solution. Since x = -4 can satisfly the equation x² - 3x + 5 = 0, only does not satisfly the ___domain that sets manually. Note that extraneous solution should focus on the '''naturally-formed ___domain''' but not on the '''manually-formed ___domain'''. Since you can set '''manually-formed ___domain''' at you own taste but '''naturally-formed ___domain''' cannot. '''naturally-formed ___domain''' should comes from the orginal equation. If the solution that does not satisfly the '''naturally-formed ___domain''' is also called extraneous solution, it should be trouble. Since this time all equation may be generate "extraneous solution" if you set an appropriate manually-formed ___domain. The term '''extraneous solution''' should not follow this approach.

If you search '''extraneous solution''' in Yahoo!, you can find many topics talking about '''extraneous solution'''. http://www.jcoffman.com/Algebra2/ch1_5.htm and http://www.mathpath.org/proof/argument.invalid.htm is one ofare thetwo appropriate exampleexamples.[[User:Doraemonpaul|Doraemonpaul]] ([[User talk:Doraemonpaul|talk]]) 19:51, 18 February 2009 (UTC)

== My changes ==