1/2+1/4+1/8+1/16+1/32+1/64这条题目要简便方法怎么算?要算的过程,
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/30 07:35:16
![1/2+1/4+1/8+1/16+1/32+1/64这条题目要简便方法怎么算?要算的过程,](/uploads/image/z/442079-71-9.jpg?t=1%2F2%2B1%2F4%2B1%2F8%2B1%2F16%2B1%2F32%2B1%2F64%E8%BF%99%E6%9D%A1%E9%A2%98%E7%9B%AE%E8%A6%81%E7%AE%80%E4%BE%BF%E6%96%B9%E6%B3%95%E6%80%8E%E4%B9%88%E7%AE%97%3F%E8%A6%81%E7%AE%97%E7%9A%84%E8%BF%87%E7%A8%8B%2C)
1/2+1/4+1/8+1/16+1/32+1/64这条题目要简便方法怎么算?要算的过程,
1/2+1/4+1/8+1/16+1/32+1/64这条题目要简便方法怎么算?要算的过程,
1/2+1/4+1/8+1/16+1/32+1/64这条题目要简便方法怎么算?要算的过程,
s=1/2+1/4+1/8+1/16+1/32+1/64①
2s=1+1/2+1/4+1/16+1/32②
②-①(相同项全部抵消,只剩首位2项)
s=1-1/64=63/64