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    Hi all. Just a question If i have an equation y = sqrt (x) and the condition is that x is an element of R (plus) The + sign is usually on top of the R. My understanding is that x can take all positive real numbers exept zero.
    Does this mean that the range must also be all positive real exept zero?
    Because the answer says that the range is all positive real including zero.
    So i am confused.
    Any help greatly appreateated
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    i would assume that R+ would exclude zero... thus implying that the range would also exclude zero.
 
 
 
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