问题标题:
sat数学题The3rdtermofageometricsequenceis-3,andthe6thetermis八分之三.whatisthe4thtermofthesequence?
问题描述:
sat数学题The3rdtermofageometricsequenceis-3
,andthe6thetermis八分之三.whatisthe4thtermofthesequence?
翟西华回答:
3*(q)的三次方=二分之一,又等比数列中有负数,故q为负数,q=-二分之一,第四项为二分之三,即3/2
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