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2. Prove that if f: D R is continuous at xo E D, then f|: D - R, defined by |f|(x) = |f(x)|, is
2. Prove that if f: D R is continuous at xo E D, then f|: D - R, defined by |f|(x) = |f(x)|, is continuous at xo. Hint: Consider a judicious application of the reverse triangle inequality.
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An Introduction to the Mathematics of financial Derivatives
Authors: Salih N. Neftci
2nd Edition
978-0125153928, 9780080478647, 125153929, 978-0123846822
