等比数列的公比q有几个比较常见的“陷阱”:定义陷阱、公式陷阱、参数设置陷阱和条件陷阱等。在求解与之有关的问题时,我们要加以重视,规避陷阱问题,以达到快速正确分析与求解的目的。1定义陷阱根据等比数列的定义a_(n+1):a_n=q(n∈N~*),此时公比q是一个非零常数。在判断等比数列或应用等 The geometric ratio q has several common q “traps ”: defining traps, formula traps, parameter setting traps and condition traps. When solving the problems related to it, we should pay attention to avoid the trap problem in order to achieve the purpose of rapid and correct analysis and solution. 1 Definition Trap According to the definition of geometric series a_ (n + 1): a_n = q (n∈N ~ *), then the common factor q is a non-zero constant. In determining the geometric sequence or application