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If Sp denotes the sum of the series 1+rp+r2p+.... to ∞ and sp the sum of the series 1−rp+r2p− ....to ∞, prove that Sp+sp=2S2p. |
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Answer» If Sp denotes the sum of the series 1+rp+r2p+.... to ∞ and sp the sum of the series 1−rp+r2p− ....to ∞, prove that Sp+sp=2S2p. |
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