39

Problems(1)

Today's calculation of Integral 39

Source: 1990 Tokyo Institute of Technology

6/9/2005

Find the minimum value of the following function

f(x)

defined at

0<x<\frac{\pi}{2}

f(x)=\int_0^x \frac{d\theta}{\cos \theta}+\int_x^{\frac{\pi}{2}} \frac{d\theta}{\sin \theta}

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