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We learned all the convergence tests before,which all terms are positive.Please try to use your brain to imagine how to deal with series whose terms are not always positive.The most simplest series are alternating series,whose terms alternate in sign.
We learned all the convergence tests before, which all terms are positive. Please try to use your brain to imagine how to deal with series whose terms are not always positive. The most simplest series are alternating series, whose terms alternate in sign.