What is the domain of the function $$u(x) = \frac{1}{\sqrt x}~?$$ Express your answer in interval notation.
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
What is the domain of the function $$u(x) = \frac{1}{\sqrt x}~?$$ Express your answer in interval notation.
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
(0,\infty)
What is the domain of the function $$u(x) = \frac{1}{\sqrt x}~?$$ Express your answer in interval notation.
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