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-\frac{17\pi f}{6}
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-\frac{17\pi f}{6}
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f\left(-\frac{17}{6}\right)\pi
Combine -3\pi and \frac{\pi }{6} to get -\frac{17}{6}\pi .
f\left(-\frac{17}{6}\right)\pi
Combine -3\pi and \frac{\pi }{6} to get -\frac{17}{6}\pi .
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