After learningThese impressions you can expect

1. Describing the matrix

2. Applying the concept of similarity of two matrices3. Able to addjaction and substraction of matrices

Students Presence Class XII: February 2010

CHECK TABLE

Name Sick Permission

Without Notice

Agus 0 1 3

Budi 1 2 0

Cicha 5 1 1

Deni 2 0 2

Name cotton Drill silk

A 25 18 9

B 27 16 8

Cloth price data in A and B Stores(In thousands) / m

25 18 9

27 16 8

0 1 3

1 2 0

5 1 1

2 0 2

Name Sick Permission

Without Notice

Agus 0 1 3

Budi 1 2 0

Cicha 5 1 1

Deni 2 0 2

The composition of rectangular numbers arranged in rows and columns, written between regular or square brackets

What is matrix ?

0 1 3

1 2 0

5 1 1

2 0 2

Row 1

Row 2

Row 3

Row 4

Matrix has four rows and three columns say

Order 4 x 3 matrix

If a matrix hasm rows and n columns is

calledOrder m x n matrix

Conclusion

Numbers referred to the constituent elements of the matrix element that

25 18 9

27 16 8

How about this matrix?

How many rows ?How many columns ?

So…. The order is.......?

2 x 3

43

21A

What do you thing about these two matrices?

43

21 Band

31

42R

39

312

24

1 Sand

54

21P

654

321 Qand

Matrix A = matrix B

Matrix R = matrix S

Matrix P matrix Q

What conclusions? Two matrices is called equal if:1. 2.

Same orderElements that on the two matrices has the same value

SIMILARITY OF TWO MATRIX

dan B = A =

107

321

x

x – 7 = 6

y206

321

If matrix A = matrix B, then determine value of x and y !

1. Given matrix

So, x = 6 + 7 = 13

2y = -1 So y = – ½

From Example Simplify +

236 142

265 147

=

+ =Ans:

225236 153142

227265 121147

236 142

265 147

225 153

227 121

461 295

492 268

Addition and Subtraction of MatricesMatrices of the same order are added by summing up the corresponding elements.

225 153

227 121

Matrices of the same order are subtracted by taking the difference of the corresponding elements.From Example Simplify −

20.000 10.000 8.000

15.000 5.000 10.000

10.000 25.000 5.000

5.000 20.000 000.15

10.000 25.000 5.000

5.000 20.000 000.15

20.000 10.000 8.000

15.000 5.000 000.10

=

Ans: _

10.000-20.000 25.000-10.000 5.000 -8.000

5000-15.000 20.000-5.000 000.15000.10 =

10.000 15.000- 3.000

10.000 15.000- 5000

THANKS

1. What have you learnt today? Apa yang sudah Anda pelajari hari ini?

2. What is positive and negatif about learning today ? Apa yang positif dan negatif tentang pembelajaran

hari ini?

3. What do you want to learn more of? Apa yang ingin Anda pelajari lebih lanjut lagi?

Harvesting