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If x=∞∑n=0(−1)ntan2nθ and y=∞∑n=0cos2nθ, where 0<θ<π4, then: |
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Answer» If x=∞∑n=0(−1)ntan2nθ and y=∞∑n=0cos2nθ, where 0<θ<π4, then: |
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