2. Decide, using results covered so far in this chapter, which of the following series converge and...

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2. Decide, using results covered so far in this chapter, which of the following series converge and which diverge.

00 k2 00 k'

(a) Lk·

(b) L 2~·

(c) {00; (k2k+ +1 3 r

(d) ~ (IT -~) k- 1.

k=l IT k=l 00 ( k' ) k2

(e) {; (k +·2)!

(f) ~ (3 + ~-l)k) k 00 (1 + (_l)k)k

(g) L ek .

k=l

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