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首先注意到:根號3减根號2=根號3加根號2的倒數. 那麼,可以令:根號3减根號2為底5的對數=x, 則:(根號3减根號2)的x次方=5 即:(1/根號3加根號2)的x次方=5 即:(1/5)的x次方=根號3加根號2 即:x=以根號3加根號2為底5分之1的對數. 證畢.
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