Suppose we wish to perform a trace of the algorithm that squares each element in

Question

Suppose we wish to perform a trace of the algorithm that squares each element in a finite sequence for the list 2, -1, -2.  Which of the following best represents the input to this algorithm using the finite sequence notation as done in the book?

a4=4, a1=1, a4=4

a2=2, a-1=-1, a-2=-2

a1=4, a2=1, a3=4

a1=2, a2=-1, a3=-2

                            
          

a4=4, a1=1, a4=4

                            
          

a2=2, a-1=-1, a-2=-2

                            
          

a1=4, a2=1, a3=4

                            
          

a1=2, a2=-1, a3=-2

Explanation / Answer

the last choice --- you are inputting the data which is 2, -1, and -2

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