1/2+1/4+1/8+1/16+1/32+...+1/256
=1/2+1/4+1/8+1/16+1/32+...+1/256+1/256-1/256
=1/2+1/4+1/8+1/16+1/32+...+1/128+1/128-1/256
=1/2+1/4+1/8+1/16+1/32+1/64+1/64-1/256
=1/2+1/4+1/8+1/16+1/32+1/32-1/256
=……
=1-1/256=255/256
1/2+1/4+1/8+1/16+1/32+...+1/256简便运算
2个回答
相关问题
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1/2+1/4+1/8+1/16+1/32+...+1/256简便运算
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1/2+1/4+1/8+1/16+1/32+1/64简便运算＝﹙1／2＋1／4＋1／8＋1／16＋1／32＋1／64＋1
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1-2/1-4/1-8/1-16/1-32/1-64/1-128/1-256/1的简便算法.急.
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1/2+1/4+1/8+1/16+········+1/256（简便计算）
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2*(1/4+1/8+1/16+1/32+1/64+1/128)÷2 求简便运算
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计算：1/4+1/8+1/16+1/32……+1/256
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1+1?2+2?4+4?8+8?16+16?32+32 64+64 128+128 256+256 512+512 10
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1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256
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1/2-1/4-1/8-1/16-1/32-1/64-1/128-1/256
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1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256=?