Extra Credit PreCalc Question
Favorites|Homepage
Subscriptions | sitemap
HOME > > Extra Credit PreCalc Question

Extra Credit PreCalc Question

[From: ] [author: ] [Date: 12-09-28] [Hit: ]
-Both x^8 and x^4 have even exponents so theyre never negative.The square root is never negative (unless you write ±√x^8).So x can be any real number, and neither side of this equation will ever be negative.Therefore, absolute value is not needed.......
Explain why the equation [ sqrt x^8 = x^4 ] is valid for all real numbers x, with no necessity for using absolute value.

-
Both x^8 and x^4 have even exponents so they're never negative. The square root is never negative (unless you write ±√x^8). So x can be any real number, and neither side of this equation will ever be negative. Therefore, absolute value is not needed.
1
keywords: PreCalc,Extra,Credit,Question,Extra Credit PreCalc Question
New
Hot
© 2008-2010 http://www.science-mathematics.com . Program by zplan cms. Theme by wukong .