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1.\u516c\u6bd4\uff1a\u5982\u679ca,ar,ar^2,\u2026\uff0car^\uff08n-1\uff09\u662f\u7b49\u6bd4\u6570\u5217\uff0c\u90a3\u4e48\u516c\u6bd4r\u662f\u5e38\u6570\uff0c\u4e14r^n=ar^\uff08n-1\uff09\/ar^n\u3002\u56e0\u6b64\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u5df2\u77e5\u7684\u76f8\u90bb\u9879\u5173\u7cfb\u6765\u786e\u5b9a\u516c\u6bd4\u3002<\/p>\n
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2.\u548c\/\u5dee\u516c\u5f0f\uff1a\u8bbea,ar,ar^2,\u2026\uff0car^\uff08n-1\uff09\u662f\u7b49\u6bd4\u6570\u5217\uff0c\u90a3\u4e48\u5b83\u4eec\u7684\u548cSn=a\uff081-r^n\uff09\/\uff081-r\uff09\u3002\u540c\u6837\uff0c\u8fd9\u4e9b\u9879\u7684\u5deeDn=ar^\uff08n-1\uff09\/\uff081-r\uff09\u3002<\/p>\n
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3.\u901a\u9879\u516c\u5f0f\uff1a\u5982\u679ca,ar,ar^2,\u2026\uff0car^\uff08n-1\uff09\u662f\u7b49\u6bd4\u6570\u5217\uff0c\u90a3\u4e48\u5176\u901a\u9879\u516c\u5f0f\u4e3aan=ar^\uff08n-1\uff09\u3002<\/p>\n
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4.\u6c42\u548c\u516c\u5f0f\uff1a\u5982\u679ca,ar,ar^2,\u2026\uff0car^\uff08n-1\uff09\u662f\u7b49\u6bd4\u6570\u5217\uff0c\u90a3\u4e48\u5b83\u4eec\u7684\u548cSn=a\uff081-r^n\uff09\/\uff081-r\uff09\u3002<\/p>\n
\u5e94\u7528\uff1a\u6c42\u548c\u516c\u5f0f\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u5feb\u901f\u8ba1\u7b97\u7b49\u6bd4\u6570\u5217\u7684\u524dn\u9879\u548c\u3002<\/p>\n
5.\u7b49\u6bd4\u4e2d\u9879\uff1a\u5982\u679c\u4e00\u4e2a\u6570\u5217{a,ar,ar^2,\u2026\uff0car^\uff08n-1\uff09}\u662f\u7b49\u6bd4\u6570\u5217\uff0c\u90a3\u4e48\u5b83\u7684\u7b49\u6bd4\u4e2d\u9879\u662far^\uff08n\/2\uff09\uff08\u5982\u679cn\u662f\u5947\u6570\uff09\u6216\uff08ar^\uff08\uff08n\/2\uff09-1\uff09+ar^\uff08\uff08n\/2\uff09+ 1\uff09\uff09\/2\uff08\u5982\u679cn\u662f\u5076\u6570\uff09\u3002<\/p>\n
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6.\u65e0\u7a77\u7b49\u6bd4\u6570\u5217\u7684\u548c\uff1a\u5982\u679c\u4e00\u4e2a\u7b49\u6bd4\u6570\u5217\u7684\u516c\u6bd4\u7edd\u5bf9\u503c\u5c0f\u4e8e1\uff0c\u90a3\u4e48\u5b83\u7684\u65e0\u7a77\u9879\u548cS=a\/\uff081-r\uff09\u3002<\/p>\n
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a,ar,ar?,ar?,\u4e00\u76f4\u5230ar^\uff08n-2\uff09\uff0car^\uff08n-1\uff09<\/p>\n
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