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# Matrix in advanced perl programming oreilly

Posted on 2001-06-20

Hi,

On page 28 of the book 'other matrix representations', number of element (8,4) in matrix of 10 rows and 5 colums is calculated as element 38, (7 * 5 + 3).

The formula i use to calculate this number =

E = (y-1)r + x

Where E = the element result i search,

r = rows of the matrix

searching element (x,y).

in the former example we get:

E = (4-1)*10 + 8.

E = 38.

Can anyone explain how the autor got to 7*5+3 ???

Thanks in advance(d perl programming)

50 pts. due to no real death importance, just questioning myself.