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How about Chebyshev?

Calculus Level 3

Compute

\[ \large \int_0^{\pi /2} \frac{ \sin(2015x) }{\sin(x)} \, dx. \]

\[ \frac\pi4\] \[ \frac\pi6\] \[ \frac\pi2\] \[ \frac\pi3\]

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Excel in math and science

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by Pi Han Goh

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