7103 Riemann integrable
ᐥA function f defined and bounded on [a,b] is Riemann integrable on [a,b] if and only if inf「sup(f(x))Ƨ[a,b]」 = sup「inf(f(x))Ƨ[a,b]」 . The common value is denoted by f(x)ᐃx「a,b」.ᐥ ┄ inf{U:U=「sup{f(x):x⸤i−1⸥≤x≤x⸤i⸥}·(x⸤i⸥−x⸤i−1⸥) Σi=0,n」} = sup{L:L=「inf{f ...
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