Suppose an and bn are series with positive terms and b, is known be divergent. (a) If an > bn for all n, what can you say about ) an? Why? O We cannot say anything about an. an converges if and only if 2a, 2 bn. > an converges if and only if n-an 2 bn. >an diverges by the Comparison Test. > an converges by the Comparison Test. (b) If an < bn for all n, what can you say about ) an? Why? bn. O) an converges if and only if an 4 bn > an converges if and only if a, s > an converges by the Comparison Test. > an diverges by the Comparison Test. O We cannot say anything about > an.

Q: 9) For ealh of Sum or determine that it A) (-2)プ 5h hzo B) a (-2)"32h 2nt1 (Ttuと

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Q: convergent serie 12) Find the sum of each 2 A) / + = + ( ² ) ² + ( ² ) ³ + ( ²1 ) 4 + ... ( - )^² +…

A: Let's find sum of given series.

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A: This is a question of infinite series.

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A: Since you have asked multiple questions in single request.so we will be  answering only first…