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Chapter 13: Q. 23 (page 1004)

Evaluate the sums in Exercises 23鈥�28.

鈭�j=13鈭�k=12jk

Short Answer

Expert verified

The value of summation is20

Step by step solution

01

Step 1. Given information

An expression is given as鈭�j=13鈭�k=12jk

02

Step 2. Evaluating Summation

First separate the terms then simplify,

鈭�j=13鈭�k=12jk=鈭�j=13鈭�k=12jk鈭�k=12jk=jk+j2鈬�11+12+21+22+31+32=1+1+2+4+3+9=20

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