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Question: riemann integral let be a function that can be integrated...

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Riemann Integral

Let a. b* be a function that can be integrated with a Riemann Integral. Define;

(x) = mar(f(x), 0)

this means;

(x)x), for f(x) > 0 0, for f(x) < 0.

In the same way we define f(x)-min(f(x),0) .

Show that the function f_{+},f_{-} and left | f ight | can be integrated with a Riemann integral in the interval left [ a,b ight ] .

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