Ppts on determinants
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PPTs ON DETERMINANTS PowerPoint PPT Presentation


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PPTs ON DETERMINANTS. SUBJECT- BUSINESS MATHEMATICS CLASS-Bcom SECTION-1. Determinants. Determinant - a square array of numbers or variables enclosed between parallel vertical bars. **To find a determinant you must have a SQUARE MATRIX !!**. Finding a 2 x 2 determinant:.

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PPTs ON DETERMINANTS

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Ppts on determinants

PPTs ON DETERMINANTS

SUBJECT- BUSINESS MATHEMATICS

CLASS-Bcom

SECTION-1


Determinants

Determinants


Ppts on determinants

Determinant - a square array of numbers or variables enclosed between parallel vertical bars.

**To find a determinant you must have a SQUARE MATRIX!!**

Finding a 2 x 2 determinant:


Ppts on determinants

Find the determinant:


Ppts on determinants

Finding a 3x3 determinant: Diagonal method

Step 1: Rewrite first two rows of the matrix.


Ppts on determinants

-224

+10

+162

= -52

-126

+12

+240

Step 2: multiply diagonals going up!

Step 2: multiply diagonals going down!

=126

Step 3: Bottom minus top!

126 - (-52)

126 + 52

= 178


Ppts on determinants

-18

+50

+6

= 38

45

- 15

+ 8

Step 2: multiply diagonals going up!

Step 2: multiply diagonals going down!

= 38

Step 3: Bottom minus top!

38 - 38

= 0


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