Observe that the number of columns in the trace table for Example 9.6.4 can he expressed as the sum . Explain why this is so, and show how this sum simplifies to the same expression given in the solution of Example 9.6.4. (Hint: A formula from exercise 13 in Section 5.2 will be helpful.)
To explain the reason for the given sum of expression from the trace table and also explain how does it simplify to the one given in example 9.6.4.
The following is the trace table given-
Upon observing the trace table carefully it can be found out that the trace table is constructed for the code which have three loops namely , and . Here is the innermost loop, is inner loop and is the outer loop.
It can also be observed that for value of , loop runs for times and for one value of , loop runs for times.
So on the basis of the above table the number of columns can be expressed as the following sum of expression.
Now let us solve the above sum of expression −
Here the term of the expression is which can be written as
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