Today's calculation of Integral 452
Source: 2009 Gunma University entrance exam
June 23, 2009
calculusintegrationlogarithmscalculus computations
Problem Statement
Let are postive constant numbers.
(1) Differentiate \ln (x\plus{}\sqrt{x^2\plus{}a})\ (x>0).
(2) For a\equal{}\frac{4b^2}{(e\minus{}e^{\minus{}1})^2}, evaluate \int_0^b \frac{1}{\sqrt{x^2\plus{}a}}\ dx.