Homework Help: is this correct?- math

Posted by HARRY on Sunday, February 12, 2012 at 4:14pm.

find the domain of the real valued function;
f(x) = sqrt(5 - (sqrtx))

my solution:

5 - (sqrt x) >=0
-(sqrt x) >= -5
(sqrt x) <= 5
x <= 25

(-infinity, 25]

is this correct?

is this correct?- math - Steve, Sunday, February 12, 2012 at 5:47pm
no, since when x < 0, sqrt(x) is not defined. so, neither is sqrt(5-sqrt(x))

the domain is just [0,25]
is this correct?- math - HARRY, Sunday, February 12, 2012 at 6:27pm
thank you very much!

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