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March 8th, 2015, 03:11 PM  #1 
Newbie Joined: Mar 2015 From: United States Posts: 2 Thanks: 0  Finding the Range of an Equation
Hello! I just need help with one problem. I have to find the range of the equation sqrt(x10). Is there an easy way to find the range with just the equation?

March 8th, 2015, 03:35 PM  #2 
Global Moderator Joined: May 2007 Posts: 6,730 Thanks: 689 
sqrt(x10) is not an equation (no equals sign). As an expression, you need to specify whether you are talking about real or complex functions. If real, the domain is x > 10. If complex, anything. To get the range for real, it is customary to define it to be all positive numbers, although all real numbers are in the range, since it is doublevalued. Last edited by skipjack; March 8th, 2015 at 07:39 PM. 
March 8th, 2015, 07:36 PM  #3 
Global Moderator Joined: Dec 2006 Posts: 20,471 Thanks: 2039 
The range is the nonnegative reals, i.e., [0, ∞).

March 8th, 2015, 08:00 PM  #4 
Banned Camp Joined: Jun 2014 From: Earth Posts: 945 Thanks: 191  

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