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By : Anik Safitri, S.Pd
Susunan bilangan
yang diletakkan
dalam kurung biasa
() atau kurung siku []
dan diatur menurut
aturan baris dan
kolom dalam suatu
jajaran berbentuk
persegi dan persegi
panjang
A=
3 1 5 9
2 1 3 7
0 1 2 3
Nama Poin Sesi
1
Poin Sesi
2
Poin Sesi
3
Jumlah
Poin
An 3 1 5 9
In 2 1 3 7
Un 0 1 2 3
Jumlah baris
:
Jumlah
kolom :
3
4
ORDO
𝐴3×4
3 1
−2 5
2 0
𝐴3×2=
𝑎𝑖𝑗 = Elemen pada baris i kolom
j
𝑎12 = 1
𝑎21 = −2
𝑎32 = 0
1. Matriks Baris
Matriks yang hanya terdiri dari 1 baris (Ordo 1 x n)
Contoh : 𝐴1×3 = 3 1 7
2. Matriks Kolom
Matriks yang hanya terdiri dari 1 kolom (Ordo m x 1)
Contoh : 𝐴3×1 =
4
3
8
3. Matriks Persegi Panjang
Matriks yang banyak barisnya tidak sama dengan banyak
kolom (Ordo m x n)
𝐶2×3 =
1 5 4
−3 1 0
4. Matriks Persegi
Matriks yang banyak barisnya sama dengan banyak kolom
(Ordo n x n)
𝐷3×3 =
2 9 5
−2 0 3
1 5 −4
trace (jumlah elemen pada diagonal utama)= 2+0+(-4) =
-2
5. Matriks nol (O)
Matriks yang semua elemennya bernilai 0 (nol)
𝑂3×3 =
0 0 0
0 0 0
0 0 0
; 𝑂2×3 =
0 0 0
0 0 0
6. Matriks diagonal (D)
Matriks persegi dengan elemen pada diagonal utama tidak
semuanya nol tetapi semua elemen yang lain bernilai nol
𝐷3×3 =
2 0 0
0 7 0
0 0 −5
; 𝐷3×3 =
0 0 0
0 0 0
0 0 −4
7. Matriks Identitas (I)
Matriks persegi dengan elemen pada diagonal utamanya 1 dan
elemen yang lain 0
𝐼 =
1 0 0
0 1 0
0 0 1
; 𝐼 =
1 0
0 1
8. Matriks segitiga atas
Matriks persegi yang elemen di bawah diagonal utamanya
bernilai 0.
𝐴 =
−3 4 2
0 1 5
0 0 4
9. Matriks segitiga bawah
Matriks persegi yang elemen di atas diagonal utamanya bernilai
0.
𝐵 =
1 0 0
5 −6 0
4 6 7
kolom  baris
baris  kolom
𝐴3×2 =
3 4
7 8
−1 −2
𝐴𝑇
2×3
=
3 7 −1
4 8 −2
Syarat :
1. Ordo sama
2. Elemen yang bersesuaian nilainya sama
𝐴 =
2 0 9
−1 3 5
; 𝐵 =
2 1 − 1 32
−1 3 25
Ordo harus sama.
Cara : Menjumlahkan elemen yang bersesuaian
3 4 −2
1 0 5
7 −9 10
+
−2 4 1
9 −7 1
1 2 1
=
1 8 −1
10 −7 6
8 −7 11
3 4 −2
1 0 5
7 −9 10
−
−2 4 1
9 −7 1
1 2 1
=
5 0 −3
−8 7 4
6 −11 9

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Matriks

  • 1. By : Anik Safitri, S.Pd
  • 2. Susunan bilangan yang diletakkan dalam kurung biasa () atau kurung siku [] dan diatur menurut aturan baris dan kolom dalam suatu jajaran berbentuk persegi dan persegi panjang
  • 3. A= 3 1 5 9 2 1 3 7 0 1 2 3 Nama Poin Sesi 1 Poin Sesi 2 Poin Sesi 3 Jumlah Poin An 3 1 5 9 In 2 1 3 7 Un 0 1 2 3 Jumlah baris : Jumlah kolom : 3 4 ORDO 𝐴3×4
  • 4. 3 1 −2 5 2 0 𝐴3×2= 𝑎𝑖𝑗 = Elemen pada baris i kolom j 𝑎12 = 1 𝑎21 = −2 𝑎32 = 0
  • 5. 1. Matriks Baris Matriks yang hanya terdiri dari 1 baris (Ordo 1 x n) Contoh : 𝐴1×3 = 3 1 7 2. Matriks Kolom Matriks yang hanya terdiri dari 1 kolom (Ordo m x 1) Contoh : 𝐴3×1 = 4 3 8
  • 6. 3. Matriks Persegi Panjang Matriks yang banyak barisnya tidak sama dengan banyak kolom (Ordo m x n) 𝐶2×3 = 1 5 4 −3 1 0 4. Matriks Persegi Matriks yang banyak barisnya sama dengan banyak kolom (Ordo n x n) 𝐷3×3 = 2 9 5 −2 0 3 1 5 −4 trace (jumlah elemen pada diagonal utama)= 2+0+(-4) = -2
  • 7. 5. Matriks nol (O) Matriks yang semua elemennya bernilai 0 (nol) 𝑂3×3 = 0 0 0 0 0 0 0 0 0 ; 𝑂2×3 = 0 0 0 0 0 0 6. Matriks diagonal (D) Matriks persegi dengan elemen pada diagonal utama tidak semuanya nol tetapi semua elemen yang lain bernilai nol 𝐷3×3 = 2 0 0 0 7 0 0 0 −5 ; 𝐷3×3 = 0 0 0 0 0 0 0 0 −4
  • 8. 7. Matriks Identitas (I) Matriks persegi dengan elemen pada diagonal utamanya 1 dan elemen yang lain 0 𝐼 = 1 0 0 0 1 0 0 0 1 ; 𝐼 = 1 0 0 1
  • 9. 8. Matriks segitiga atas Matriks persegi yang elemen di bawah diagonal utamanya bernilai 0. 𝐴 = −3 4 2 0 1 5 0 0 4 9. Matriks segitiga bawah Matriks persegi yang elemen di atas diagonal utamanya bernilai 0. 𝐵 = 1 0 0 5 −6 0 4 6 7
  • 10. kolom  baris baris  kolom 𝐴3×2 = 3 4 7 8 −1 −2 𝐴𝑇 2×3 = 3 7 −1 4 8 −2
  • 11. Syarat : 1. Ordo sama 2. Elemen yang bersesuaian nilainya sama 𝐴 = 2 0 9 −1 3 5 ; 𝐵 = 2 1 − 1 32 −1 3 25
  • 12. Ordo harus sama. Cara : Menjumlahkan elemen yang bersesuaian 3 4 −2 1 0 5 7 −9 10 + −2 4 1 9 −7 1 1 2 1 = 1 8 −1 10 −7 6 8 −7 11
  • 13. 3 4 −2 1 0 5 7 −9 10 − −2 4 1 9 −7 1 1 2 1 = 5 0 −3 −8 7 4 6 −11 9