Question

Write the first 6 terms of the sequences whose nth terms are given below and classify them as arithmetic progression, geometric progression, arithmetico-geometric progression, arimetixo geometric proggression, harmonic progression and none of them. (iv) (-1)n/n
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Answer 1

Step-by-step explanation:

if n= 1. -1*1/1 = -1

if n=2. -1*2/2 = -1

like that for 3 = -1

4= -1,5=-1 and 6=-1

Here difference is t2 - t1 = -1 -( -1) = -2

So this is AP

Answer 2

Step-by-step explanation:

Write the first 6 terms of the sequences whose n terms are given below and classify them as arithmetic progression, geometric progression, arithmetico-geometric progression, harmonic progression and none of them

. (i) 1/2n + 1

(ii) (n + 1)(n + 2)/(n + 3(n + 4))

(iii) 4(1/2)n

(iv) (-1)n/n

(v) (2n + 3)/(3n + 4)

(vi) (3n - 2)/3n - 1

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