Domain of a function

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March 23rd 2009, 02:44 PM
Apprentice123

Domain of a function

Find the domain of a function

$f(x,y)=\sqrt{25-x^2-y^2}$
March 23rd 2009, 03:25 PM
stapel

Quote:

Originally Posted by Apprentice123

Find the domain of a function

$f(x,y)=\sqrt{25-x^2-y^2}$

Hint: Are square roots defined for all inputs, or only non-negative ones? What inequality does this suggest for the allowable input values for this function? (Wink)

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