Problem #6.9, MA598R, Summer 2009, Weigel

$ \text{Suppose} f, f' \in L^{1}(\mathbb{R}), f \in \mbox{AC}(I) \text{ for all bounded intervals } I. $

$ \text{Show that }\int_{\mathbb{R}}{f'} = 0. $


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Alumni Liaison

Ph.D. 2007, working on developing cool imaging technologies for digital cameras, camera phones, and video surveillance cameras.

Buyue Zhang