Question: 3. Explain why the Ratio Test can or cannot be used to determine whether the series isconvergent.(a)n=1(-1)n(b)n=1sin(n)(c)n=12n+1n2n-1(d)n=1(n!)2(2n)!

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

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