I have a very basic doubt in analysis.I know that $0^x$ is $0$ and also any number to the power zero is one.$0^0$ is the situation where we have to apply both the conditions. So we cant define that.But i have doubt in very next part.If $x$ and $y$ are two variables what happens to the value of $x^y$ as both tends to zero? Is it undefined? Please help me.