令S=1/2+1/4+1/8+1/16+-----+1/128+1/256
2S=1+1/2+1/4+1/8+1/16+-----+1/128
S=2S-S=1-1/256
=255/256
1/2+1/4+1/8+1/16+-----+1/256=
2个回答
相关问题
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1-1/2-1/4-1/8-1/16-...-1/256=?
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(x-1/2)(2x+1)(2x^2+1/2)(4x^4+1/4)(16x^8+1/16)÷(256x^16+1/256
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1/2+1/4+1/8+1/16+········+1/256（简便计算）
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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+...+1/256简便运算
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计算：1/4+1/8+1/16+1/32……+1/256
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1/2 +1/4 +1/8 +1/16+.+ 1/256的值是多少?
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(x-1/2)(2x+1)(2x^2+1/2)(4x^4+1/4)(16x^6+1/16)/(256x^16-1/256
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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