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Question

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?
13 years ago

Answers

Steve
no, since when x < 0, sqrt(x) is not defined. so, neither is sqrt(5-sqrt(x))

the domain is just [0,25]
13 years ago
HARRY
thank you very much!
13 years ago

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