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1.2+2.3+3.4+4.5+.. Find the sum of the following series to n terms

1.2+2.3+3.4+4.5+.. Find the sum of the following series to n terms

Grade:11

1 Answers

Vikas TU
14149 Points
7 years ago
When U would find te common difference between each term U would get 1.1 that s constant.
thus d = 1.1
a1 = 1.2
an = a1 + (n-1)*1.1
     = 1.2 + (n-1) .
simlarly apply the formulae for summmation n nterms and after manipulating in terms of n
put n infinity.

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