Comments on: Finding Domains – It’s just a set of rules http://danielbachelis.com/tutor/15/finding-domains-its-just-a-set-of-rules/ Tutoring students since 2008 Tue, 25 Jan 2011 17:21:16 +0000 hourly 1 http://wordpress.org/?v=3.0.4 By: admin http://danielbachelis.com/tutor/15/finding-domains-its-just-a-set-of-rules/comment-page-1/#comment-91 admin Tue, 25 Jan 2011 17:21:16 +0000 http://danielbachelis.com/tutor/?p=15#comment-91 I don't know what to tell you, but it can't be X != 0, AND it's NOT x = all real #s X^4 would be all real #s, but fractional roots ARE square roots, cube roots, or whatever you want to call them. x^1/2 = sqrt(x) You can't square root negative numbers, so the domain is x >= 0 I don’t know what to tell you, but it can’t be X != 0, AND it’s NOT x = all real #s

X^4 would be all real #s, but fractional roots ARE square roots, cube roots, or whatever you want to call them.

x^1/2 = sqrt(x)

You can’t square root negative numbers, so the domain is

x >= 0

]]> By: Ari http://danielbachelis.com/tutor/15/finding-domains-its-just-a-set-of-rules/comment-page-1/#comment-89 Ari Tue, 25 Jan 2011 16:26:10 +0000 http://danielbachelis.com/tutor/?p=15#comment-89 My book is telling me x^1/4 has a domain of x does not equal zero. howcome? shouldent it be all real #'s? My book is telling me x^1/4 has a domain of x does not equal zero. howcome? shouldent it be all real #’s?

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