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2. Explain why the Ratio Test can or cannot be used to determine whether the series isconvergent.(a)[infinity]Qn=1(−1)n(b)[infinity]Qn=1sin(n)(c)[infinity]Qn=12n+1n2n−1(d)[infinity]Qn=1(n!)2(2n)!
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2. Explain why the Ratio Test can or cannot be used to determine whether the series isconvergent.(a)[infinity]Qn=1(−1)n(b)[infinity]Qn=1sin(n)(c)[infinity]Qn=12n+1n2n−1(d)[infinity]Qn=1(n!)2(2n)!

User RCT
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I think so its A [infinity]Qn=1(−1)n

User Aaz
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