这个是分母加倍的加法,规律如下
1/2=1-1/2
1/4=1/2-1/4
1/8=1/4-1/8
.
1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256
=1-1/2+1/2+1/4+1/4-1/8..+1/128-1/256
=1-1/256
=255/256
1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256
8个回答
相关问题
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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=?
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1/2-1/4-1/8-16/1-32/1-64/1-128/1-256/1
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1+2\1+4\1+8\1+16\1+32\1+64\1+128\1+256\1
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计算：1/2+4/1+8/1+16/1+32/1+64/1+128/1+256/1
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1-1/2+1/4-1/8+1/16-1/32+1/64-1/128+1/128+1/256-1/512
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1+[1/2]+[1/4]+[1/8]+[1/16]+[1/32]+[1/64]+[1/128]+[1/256]+[1/
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2/1 + 4/1 + 8/1 + 16/1 + 32/1 + 64/1 + 128/1 + 256/1等于什么