已知:2/2x4=1/2-1/4 。计算:2/2x4+2/4x6+2/6x8+2/8x10+2/10x2
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解决时间 2021-03-27 04:36
- 提问者网友:锁深秋
- 2021-03-26 06:54
已知:2/2x4=1/2-1/4 。计算:2/2x4+2/4x6+2/6x8+2/8x10+2/10x2
最佳答案
- 五星知识达人网友:平生事
- 2021-03-26 08:20
2/2x4+2/4x6+2/6x8+2/8x10+2/10x12
=1/2-1/4+1/4-1/6+1/6-1/8+1/8-1/10+1/10-1/12
=1/2-1/12
=6/12-1/12
=5/12
=1/2-1/4+1/4-1/6+1/6-1/8+1/8-1/10+1/10-1/12
=1/2-1/12
=6/12-1/12
=5/12
全部回答
- 1楼网友:胯下狙击手
- 2021-03-26 09:39
2/2x4+2/4x6+2/6x8+2/8x10+2/10x2=1/2-1/4+1/4-1/6+1/6-1/8+1/8-1/10+1/10=1/2
- 2楼网友:雪起风沙痕
- 2021-03-26 09:05
2/2x4+2/4x6+2/6x8+2/8x10+2/10x12
=1/2-1/4 +1/4-1/6 +1/6-1/8 +1/8-1/10 +1/10-1/12
=1/2-1/12
=5/12
=1/2-1/4 +1/4-1/6 +1/6-1/8 +1/8-1/10 +1/10-1/12
=1/2-1/12
=5/12
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