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Today's calculation of Integral 502

Source: National Defence Medical College entrance exam, Problem 2 2009/10/31

November 5, 2009
calculusintegrationlimitcalculus computations

Problem Statement

(1) For 0<x<1 0 < x < 1, prove that (\sqrt {2} \minus{} 1)x \plus{} 1 < \sqrt {x \plus{} 1} < \sqrt {2}. (2) Find \lim_{a\rightarrow 1 \minus{} 0} \frac {\int_a^1 x\sqrt {1 \minus{} x^2}\ dx}{(1 \minus{} a)^{\frac 32}}.