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well I was working through Riemanns Criterion :

let f be a bounded function on the closed interval [a,b]. then f is riemann integrable on [a,b] if and only if , given any epsilon>0, there exist a partition P of [a,b] such that U(f,P)-L(f,P)<epsilon

but there is one thing that im confused about, riemanns integrability only requires a function to be bounded on a closed interval, if that is the case a piecewise function or a function that is discontinuous at a point which are bounded on a closed interval should be riemann integrable would that be be correct? i just couldnt see how you would intergrate such functions

steven