求|1/3-1/2|+|1/4-1/3|+|1/5-1/4+···+|1/10-1/9||的值
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求|1/3-1/2|+|1/4-1/3|+|1/5-1/4+···+|1/10-1/9||的值
求|1/3-1/2|+|1/4-1/3|+|1/5-1/4+···+|1/10-1/9||的值
求|1/3-1/2|+|1/4-1/3|+|1/5-1/4+···+|1/10-1/9||的值
=1/3-1/3+1/4-1/4+1/5-1/5+1/6-1/6+1/7-1/7+1/8-1/8+1/9-1/9+1/10-1/2
=-0.3