f(x;y) = 1/ (9x^2 + y^2)

what is the domain of this function? i know that 9x^2 + y^2 cannot be equals to 0 so where do i go from there?

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- Oct 25th 2009, 02:56 AMyen yendomain of a function
f(x;y) = 1/ (9x^2 + y^2)

what is the domain of this function? i know that 9x^2 + y^2 cannot be equals to 0 so where do i go from there? - Oct 25th 2009, 03:00 AMmr fantastic
- Oct 25th 2009, 04:19 AMRaoh
hi(Happy)

$\displaystyle 9x^{2}+y^{2}$ cannot equal zero only when $\displaystyle x$ and $\displaystyle y$ aren't equal to zero.