Suppose that $f$ is continuous and positive on $(0, 1)$ and that $$\lim_{x \to 0^+} f(x) = \lim_{x \to 1^−} f(x) = 0.$$ Show that $f$ has a maximum value on $(0, 1)$ but no minimum value.
How to prove that f has a maximum value on (0, 1) but no minimum value?
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real-analysis