Assignment 12
Sharon Sewell
EMAT 6680
I have been using a spreadsheet program of one kind or another for many, many years. They are a very versital tool when working with a lot of data that needs sorting or a repetitive formula. A perfect example of this is part 7 of this assignment. Place four numbers in the first row as follows:A B C D. Each of these needs to be in a separate column. For each successive row replace the entries by the absolute value of the difference of the entery just above and the entry just to the right in the previous row. In the foruth position use the absolute value of the difference of the fourth and the first row as follows: A ?B B ? C C ? D D ? A. This is not difficult to create on a spreadsheet program. Fill in the first row with the desired first numbers. On the second row create the formula needed to do the math for each cell. The critical things to remember were to not forget the absolute value commands and to make sure that A is subtracted from D and not column E. Once the second row is set up, it can be copied down the page as far as desired. The row numbers and column numbers will shift appropriately with the copy function.
Here is an example of the above problem:

























































































































































Column
A

Column
B

Column
C

Column
D


Column
A

Column
B

Column
C

Column
D

1500672

3

2756

299


22

36

79

5

1500669

2753

2457

1500373


14

43

74

17

1497916

296

1497916

296


29

31

57

3

1497620

1497620

1497620

1497620


2

26

54

26

0

0

0

0


24

28

28

24

0

0

0

0


4

0

4

0






4

4

4

4






0

0

0

0










Column
A

Column
B

Column
C

Column
D


Column
A

Column
B

Column
C

Column
D

84

132

17

1


1

10

100

1000

48

115

16

83


9

90

900

999

67

99

67

35


81

810

99

990

32

32

32

32


729

711

891

909

0

0

0

0


18

180

18

180

0

0

0

0


162

162

162

162

0

0

0

0


0

0

0

0










I
created eight different sets of numbers to better show how this problem
worked.? If you have a desire
to manipulate the data more click here to access the worksheet. (Assignment12.xls)? Notice
that most sets of numbers get to zero in four or five rows.? But
there is one that takes six and one that takes seven.?Every
row does eventually have zeros in all four columns.? The
row before the end logically has the same number every column also.? What
is the largest number of rows that you found before hitting zero?? After
much playing around mine was 13.? And
that took some playing around with first one column then the others.? What
made it easy was the fact that, except for the changing the first row,
I did not have to do any of the mathematics.