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Chapter 12: Q. 12.17 (page 1170)

Expand the partial sum and find its value:∑i=153i

Short Answer

Expert verified

The value of the partial sum is 45.

Step by step solution

01

Step 1. Given information

Thepartialsumisgivenas∑i=153iWehavetofindthevalueofthepartialsum.

02

Step 2. Expand the partial sum

Now,Wesubstitutethevalues1,2,3,4,5inorder.⇒∑i=153i=3⋅1+3⋅2+3⋅3+3⋅4+3⋅5=3+6+9+12+15=45

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