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After learning These impressions you can expect 1. Describing the matrix 2. Applying the concept of similarity of two matrices 3. Able to addjaction and substraction of matrices

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Students Presence Class XII: February 2010 CHECK TABLE Name SickPermissi on Without Notice Agus 013 Budi 120 Cicha 511 Deni 202 Name cotton Drillsilk A 25189 B 27168 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 SickPermissi on Without Notice Agus 013 Budi 120 Cicha 511 Deni 202

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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 Column 1Column 2 Column 3 Matrix has four rows and three columns say Order 4 x 3 matrix If a matrix has m rows and n columns is called Order m x n matrix Conclusion Numbers referred to the constituent elements of the matrix element that

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25 18 9 27 16 8 How about this matrix? How many rows ? How many columns ? So…. The order is.......? 2 x 3

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What do you thing about these two matrices? Matrix A = matrix B Matrix R = matrix S Matrix P matrix Q What conclusions?Two matrices is called equal if: 1. 2. Same order Elements that on the two matrices has the same value SIMILARITY OF TWO MATRIX

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dan B = A = x – 7 = 6 If matrix A = matrix B, then determine value of x and y ! 1. Given matrix So, x = 6 + 7 = 13 2y = -1So y = – ½

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From Example Simplify + = + = Ans: Addition and Subtraction of Matrices Matrices of the same order are added by summing up the corresponding elements.

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

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THANKS

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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

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3.6 Solving Systems Using Matrices You can use a matrix to represent and solve a system of equations without writing the variables. A matrix is a rectangular.

3.6 Solving Systems Using Matrices You can use a matrix to represent and solve a system of equations without writing the variables. A matrix is a rectangular.

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