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If x=a+ar+ar2+⋯∞, y=b−br+br2−⋯∞ and z=c+cr2+cr4+⋯∞ for |r|>1, then the value of xyz is |
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Answer» If x=a+ar+ar2+⋯∞, y=b−br+br2−⋯∞ and z=c+cr2+cr4+⋯∞ for |r|>1, then the value of xyz is |
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