January 2014
Intermediate to advanced
144 pages
4h 2m
English
Content preview from Mathematical Formulas for Industrial and Mechanical Engineering
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2. Write the three columns and then repeat the first two to have the fourth and fifth columns,
respectively, as follows (vertical bars are to be omitted):
a
11
a
12
a
13
a
11
a
12
a
21
a
22
a
23
a
21
a
22
a
31
a
32
a
33
a
31
a
32
:
3. Write the product of the elements of each leading diagonal with positive sign. Also write
the product of the elements of each secondary diagonal with negative sign.
4. The sum of the products obtained in step (3) gives the value of the determinant.
Example
Use Sarrus rule to find the value of the following determinant:
13 5
21 3
3 24 26
Solution
The elements of the given determinant are arranged as follows:
13 513
21 321
3 24 263 24
Now, according ...
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