This scheme will be formed of six diagonals with three different elements of
determinants. The elements products in three diagonals in left side will get the “+”
sign, in the other hand the elements products in three other different diagonals in right
side will get “-“sign. This will produce three terms with “+”sign and three other terms
with “-“sign, which in fact presents the definition formula to compute the
determinants of third order.
This new method consists of two other schemes, which will be formed in the same
way like the preliminary scheme (Scheme 5) but these two other different schemes
manipulate with elements in other rows and columns from the Scheme 5.
The other forms of this method are shown in the following schemes (Scheme 6,
Scheme 7)