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credit other-wise. Fully simplify all answers. There is no need to explain your work. \text { (a) } \frac{d}{d y}\left(\arctan (2 y)+\arctan \left(\frac{1}{2 y}\right)\right) \text { (b) } \frac{d}{d \theta}(5-12 \ln |\cos 3 \theta|) \text { (c) } \frac{d}{d w}(\arcsin (\cos (w / 4)))

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