一道英语的数学题 看不懂啊the first term of a geometric series is 24 and the common ratio is 5/2.How many consecutive terms must be taken to give a sum of 609?
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![一道英语的数学题 看不懂啊the first term of a geometric series is 24 and the common ratio is 5/2.How many consecutive terms must be taken to give a sum of 609?](/uploads/image/z/5222023-7-3.jpg?t=%E4%B8%80%E9%81%93%E8%8B%B1%E8%AF%AD%E7%9A%84%E6%95%B0%E5%AD%A6%E9%A2%98+%E7%9C%8B%E4%B8%8D%E6%87%82%E5%95%8Athe+first+term+of+a+geometric+series+is+24+and+the+common+ratio+is+5%2F2.How+many+consecutive+terms+must+be+taken+to+give+a+sum+of+609%3F)
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一道英语的数学题 看不懂啊the first term of a geometric series is 24 and the common ratio is 5/2.How many consecutive terms must be taken to give a sum of 609?
一道英语的数学题 看不懂啊
the first term of a geometric series is 24 and the common ratio is 5/2.How many consecutive terms must be taken to give a sum of 609?
一道英语的数学题 看不懂啊the first term of a geometric series is 24 and the common ratio is 5/2.How many consecutive terms must be taken to give a sum of 609?
应该是4吧.首项为24,公比为5/2的这么个级数,多少项的和是609?
24*((5/2)^n-1)/(5/2-1)=609,解得n=4
翻译的意思是:第一学期的几何级数是24和常见的比率是整合。多少次连续条件,必须采取给一笔609吗?
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一道英语的数学题 看不懂啊the first term of a geometric series is 24 and the common ratio is 5/2.How many consecutive terms must be taken to give a sum of 609?
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