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Find the domain of

0 votes

f(x)=sqrt(x)-sqrt(9-x)?

domain-of-a-function

asked Sep 12, 2014 in PRECALCULUS by anonymous

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1 Answer

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The function f(x) = √x - √(9 - x).

Here the domain is restriction, So, the domain of the above function is all non negative real numbers.

The expression is √x ----> the domain x ≥ 0.

The expression is √(9 - x) ----> the domain : 9 - x ≥ 0 ⇒ x ≤ 9.

The domain of the function is [0, 9 ].

answered Sep 12, 2014 by casacop Expert

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