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Matematika Terapan
Atikah Ardi, S.Si., M.Si.
Politeknik Negeri Padang
Kontrak Perkuliahan 13:23:45
Mata Kuliah : Matematika Terapan
Kode Mata Kuliah : TAB3202
SKS : 2 sks
Dosen : Atikah Ardi, S.Si., M.Si
E-mail : atikahardi76@gmail.com
Semester/tahun : I (Ganjil)/ TA 2021-2022
Download materi kuliah : spadame.pnp.ac.id
Enrollment code :
Jadwal Kuliah :
Matematika Terapan
Kontrak Perkuliahan
Matematika Terapan
13:23:45
Materi :
1. Dasar Matematika
2. Turunan dan aplikasinya
3. Integral dan aplikasinya
UTS
4. Metode Kuadrat Terkecil
5. Statistik
6. Teori Peluang
UAS
Kontrak Perkuliahan 13:23:45
1. Sikap : 10%
2. Tugas : 20%
3. Kuis : 20%
4. UTS : 20%
5. UAS : 30%
Komponen Penilaian :
Matematika Terapan
Kontrak Perkuliahan 13:23:45
Konversi Nilai :
Huruf Mutu Angka Mutu Rentang / Batasan
A 4 A ≥ 85
A- 3.75 80 ≤ A- < 85
B+ 3.5 75 ≤ B+ < 80
B 3 70 ≤ B < 75
B- 2.75 65 ≤ B- < 70
C+ 2.5 60 ≤ C+ < 65
C 2 55 ≤ C < 60
C- 1.75 50 ≤ C- < 55
D 1 40 ≤ D < 50
E 0 E < 40
Matematika Terapan
Kontrak Perkuliahan 13:23:45
Buku Referensi :
1. STROUD, K. A.; BOOTH, Dexter J. Matematika Teknik. Jld. 1. 2003
2. PURCELL, Edwin J.; VARBERG, Dale; RIGDON, Steven E. KALKULUS,
jilid 1. 2004.
Matematika Terapan
ARITMATIKA 13:23:45
Jenis Bilangan :
Kompleks
Real
Imajiner
Matematika Terapan
ARITMATIKA 13:23:45
Matematika Terapan
ARITMATIKA 13:23:45
 Bilangan Real adalah gabungan dari bilangan rasional dan irasional
 Bilangan Rasional
Q = {
𝑚
𝑛
𝑚 𝑏𝑖𝑙𝑎𝑛𝑔𝑎𝑛 𝑏𝑢𝑙𝑎𝑡 𝑑𝑎𝑛 𝑛 𝑏𝑖𝑙𝑎𝑛𝑔𝑎𝑛 𝑎𝑠𝑙𝑖}
Sifat : jika diubah ke bilangan desimal, berhenti dinilai tertentu atau berulang.
Contoh :
1
5
= 0,5 ;
1
3
= 0,3333 …
 Bilangan Irasional
Sifat : tidak dapat diubah ke pecahan biasa, tidak mempunyai desimal berulang.
Contoh : π = 3,141592653589, 3, 5,
3
9, 2
𝐿𝑜𝑔 3, dan seterusnya,
,
, Matematika Terapan
ARITMATIKA 13:23:45
 Bilangan Asli digunakan untuk menghubungkan banyaknya objek suatu himpunan
N = {1, 2, 3, 4, 5, ....}
 Bilangan Prima adalah bilangan asli yang mempunyai lebih dari dua faktor
K = {2, 3, 5, 7, 11, 11, ....}
 Bilangan Cacah adalah gabungan dari bilangan asli dan nol
C = {0, 1, 2, 3, 4, 5, ...}
 Bilangan bulat negatif adalah lawan dari bilangan asli
–N = {–1, –2, –3, –4, –5, ...}
 Bilangan Bulat
Z = {..., –3, –2, –1, 0, 1, 2, 3, ...}
 Bilangan Genap
G = {..., –6, –4, –2, 0, 2, 4, 6, ...}
 Bilangan Ganjil
{..., –5, –3, 1, 3, 5, 7, ...}
 Bilangan Pecahan
Bentuk x =
𝑚
𝑛
, m bilangan bulat dan n bilangan asli dengan m tidak habis dibagi n
Matematika Terapan
ARITMATIKA 13:23:45
,
,
Sifat Bilangan Real
1. Persamaan Transitif, jika a = b, b = c, maka a = c
2. Penjumlahan & Perkalian, a + b, a. b
3. Komutatif, a + b = b + a, a. b = b. a
4. 𝐴𝑠𝑜𝑠𝑖𝑎𝑡𝑖𝑓, 𝑎 + 𝑏 + 𝑐 = 𝑎 + 𝑏 + 𝑐
5. 𝐼𝑑𝑒𝑛𝑡𝑖𝑡𝑎𝑠, 0 + 𝑎 = 𝑎, 1. 𝑎 = 𝑎
6. 𝐼𝑛𝑣𝑒𝑟𝑠, 𝑎 + −𝑎 = 0 ; −𝑎 = 𝑛𝑒𝑔𝑎𝑡𝑖𝑓 𝑎
𝑅𝑒𝑠𝑝𝑖𝑟𝑜𝑘𝑎𝑙, 𝑎. 𝑎−1
= 1 ; 𝑎−1
= 𝑟𝑒𝑠𝑝𝑖𝑟𝑜𝑘𝑎𝑙
7. 𝐷𝑖𝑠𝑡𝑟𝑖𝑏𝑢𝑡𝑖𝑓, 𝑎 𝑏 + 𝑐 = 𝑎𝑏 + 𝑎𝑐, 𝑏 + 𝑐 . 𝑎 = 𝑏. 𝑎 + 𝑐. 𝑎
Matematika Terapan
ARITMATIKA 13:23:45
,
,
Sifat tambahan
1. 𝑎 − 𝑏 = 𝑎 + −𝑏
2. 𝑎 − −𝑏 = 𝑎 + 𝑏
3. −𝑎 = −1 𝑎
4. 𝑎 𝑏 + 𝑐 = 𝑎𝑏 + 𝑎𝑐
5. 𝑎 𝑏 − 𝑐 = 𝑎𝑏 − 𝑎𝑐
6. − 𝑎 + 𝑏 = −𝑎 − 𝑏
7. − 𝑎 − 𝑏 = −𝑎 + 𝑏
8. − −𝑎 = 𝑎
9. 𝑎 0 = 0
10. −𝑎 𝑏 = − 𝑎𝑏 = −𝑎(−𝑏)
11. −𝑎 −𝑏 = 𝑎𝑏
12.
𝑎
1
= 𝑎
13.
𝑎
𝑏
= 𝑎
1
𝑏
, 𝑏 ≠ 0
14.
𝑎
−𝑏
= −
𝑎
𝑏
=
−𝑎
𝑏
, 𝑏 ≠ 0
15. −
𝑎
−𝑏
=
𝑎
𝑏
, 𝑏 ≠ 0
16.
0
𝑎
= 0, 𝑎 ≠ 0
17.
𝑎
𝑎
= 1, 𝑎 ≠ 0
18. 𝑎
𝑏
𝑎
= 𝑏, 𝑎 ≠ 0
19. 𝑎
1
𝑎
= 1, 𝑎 ≠ 0
20.
𝑎
𝑏
.
𝑐
𝑑
=
𝑎𝑐
𝑏𝑑
, 𝑏, 𝑑 ≠ 0
21.
𝑎𝑏
𝑐
=
𝑎
𝑐
. 𝑏 = 𝑎
𝑏
𝑐
, 𝑐 ≠ 0
22.
𝑎
𝑏𝑐
=
𝑎
𝑏
.
1
𝑐
=
1
𝑏
.
𝑎
𝑐
23.
𝑎
𝑏
=
𝑎
𝑏
.
𝑐
𝑐
=
𝑎𝑐
𝑏𝑐
, 𝑏, 𝑐 ≠ 0
24.
a
𝑐
+
𝑏
𝑐
=
𝑎+𝑏
𝑐
, 𝑐 ≠ 0
25.
𝑎
𝑏
+
𝑐
𝑑
=
𝑎𝑑+𝑏𝑐
𝑏𝑑
, 𝑏. 𝑑 ≠ 0
26.
𝑎
𝑏
𝑐
𝑑
=
𝑎
𝑏
−
𝑐
𝑑
=
𝑎
𝑏
.
𝑑
𝑐
=
𝑎𝑑
𝑏𝑐
, 𝑏, 𝑐, 𝑑 ≠ 0
27.
𝑎
𝑏
𝑐
= 𝑎 −
𝑏
𝑐
= 𝑎.
𝑐
𝑏
=
𝑎𝑐
𝑏
, 𝑏 , 𝑐 ≠ 0
Matematika Terapan
ARITMATIKA 13:23:45
,
,
Coba Kerjakan!
1.
7
1
8
=
2.
2
5
+
4
15
=
3.
3
8
−
5
12
=
Matematika Terapan
ARITMATIKA 13:23:45
,
,
Aturan dasar eksponen dan akar
𝑎𝑚 eksponen
basis
1. 𝑎𝑚× 𝑎𝑛 = 𝑎𝑚+𝑛
2. 𝑎𝑚
÷ 𝑎𝑛
= 𝑎𝑚−𝑛
3. (𝑎𝑚)𝑛= 𝑎𝑚𝑛
4. 𝑎0= 1
5. 𝑎−𝑚=
1
𝑎𝑚
6. 𝑎
1
𝑚= 𝑚
𝑎
7. 𝑎
𝑛
𝑚= (𝑚
𝑎)𝑛 atau
𝑚
𝑎𝑛
Matematika Terapan
ARITMATIKA 13:23:45
,
,
Sederhanakan!
E = (5x2
y−
3
2z
1
4)2
× (4x4
y2
z)−
1
2
E=?
6𝑥−4
× 2𝑥3
8𝑥−3
=
12
8
.
𝑥−4+3
𝑥−3
=
12
8
.
𝑥−1
𝑥−3
=
3
2
. 𝑥−1+3 =
3
2
𝑥2
Matematika Terapan
ALJABAR 13:23:45
Aturan Aljabar
1. hukum komutatif
• x + y = y + x
• xy = yx
Penambahan & perkalian adalah operasi komutatif
• x - y ≠ y – x kecuali x = y dan
• x/y ≠ y/x kecuali x = y dan keduanya tidak sama dengan 0
Pengurangan & pembagian bukan operasi komutatif
2. hukum asosiatif
• x + (y+z) = (x+y) + z dan
• x(yz)=(xy)z=xyz
• x(y+z) = xy + xz
Matematika Terapan
ALJABAR 13:23:45
3. hukum distributif
• x(y+z) = xy + xz dan (x+y)z = xz + yz
• x(y-z) = xy - xz dan (x-y)z = xz – yz
• (x + y) / z = (x/z) + (y/z)
• x / (y +z) ≠ (x/y) + (x/z)
Matematika Terapan
ALJABAR 13:23:45
Bentuk Pernyataan Aljabar
𝟐𝒙 + 𝟑𝒚 + 𝟓
Variabel
Koefisien
Konstanta
3 Suku, derajat 1
𝒙𝟐
+ 𝟑𝒙 − 𝟓 3 Suku, derajat 2
1
𝟒𝒖𝒗 − 𝟕𝒖𝒛 − 𝟔𝒘𝒛 + 𝟐𝒖𝒗 + 𝟑𝒘𝒛 = 𝟔𝒖𝒗 − 𝟕𝒖𝒛 − 𝟑𝒘𝒛
Matematika Terapan
ALJABAR 13:23:45
𝒚 + 𝒙
𝟖𝒙
−
𝒚 − 𝒙
𝟒𝒙
=
𝒚
𝟖𝒙
+
𝒙
𝟖𝒙
−
𝒚
𝟒𝒙
+
𝒙
𝟒𝒙
=
=
𝟑
𝟖
−
𝒚
𝟖𝒙
=
𝟏
𝟖
𝟑 −
𝒚
𝒙
=
𝟏
𝟖𝒙
(𝟑𝒙 − 𝒚)
Matematika Terapan
13:23:45
ALJABAR
Perkalian dan Pembagian Pernyataan Aljabar
(2𝑥 + 5)(𝑥2 + 3𝑥 + 4) 𝑥2 + 3𝑥 + 4
2𝑥 + 5
2𝑥3
+ 6𝑥2
+ 8𝑥
5𝑥2 + 15𝑥 + 20
2𝑥3 + 11𝑥2 + 23𝑥 + 20
(2𝑥 + 6)(4𝑥3 − 5𝑥 − 7)
Matematika Terapan
13:23:45
ALJABAR
Perkalian dan Pembagian Pernyataan Aljabar
12𝑥3 − 2𝑥2 − 3𝑥 + 28
12𝑥3 + 16𝑥2
4𝑥2 − 6𝑥 + 7
3𝑥 + 4
−18𝑥2 − 3𝑥
−18𝑥2
− 24𝑥
21𝑥 + 28
21𝑥 + 28
4𝑥3 − 0𝑥2 + 13𝑥 + 33
2𝑥 + 3
Matematika Terapan
13:23:45
ALJABAR
Faktorisasi Aljabar
• 35𝑥2𝑦2 − 10𝑥𝑦3 = 5𝑥𝑦2(7𝑥 − 2𝑦)
• 10𝑥 + 8 = 2(5𝑥 + 4)
• 𝐹𝑃𝐵 𝐾𝑜𝑒𝑓𝑖𝑠𝑖𝑒𝑛 35 𝑑𝑎𝑛 10 = 5
• 𝐹𝑃𝐵 𝑝𝑒𝑟𝑝𝑎𝑛𝑔𝑘𝑎𝑡𝑎𝑛 𝑥 = 𝑥
• 𝐹𝑃𝐵 𝑝𝑒𝑟𝑝𝑎𝑛𝑔𝑘𝑎𝑡𝑎𝑛 𝑦 = 𝑦2
• 8𝑥4𝑦3 + 6𝑥3𝑦2
Faktorkan!
• 15𝑎3𝑏 − 9𝑎2𝑏2
Matematika Terapan
13:23:45
ALJABAR
Faktorisasi Aljabar dengan pengelompokkan
2𝑎𝑐 + 6𝑏𝑐 + 𝑎𝑑 + 3𝑏𝑑
2𝑎𝑐 + 6𝑏𝑐 𝑎𝑑 + 3𝑏𝑑 = 2𝑐 𝑎 + 3𝑏 + 𝑑 𝑎 + 3𝑏 = (𝑎 + 3𝑏)(𝑎𝑐 + 𝑑)
• (𝑎 + 𝑏)2
= 𝑎 + 𝑏 𝑎 + 𝑏 = 𝑎2
+ 𝑎𝑏 + 𝑏𝑎 + 𝑏2
= 𝑎2
+ 2𝑎𝑏 + 𝑏2
• (𝑎 − 𝑏)2
= 𝑎 − 𝑏 𝑎 − 𝑏 = 𝑎2
− 𝑎𝑏 − 𝑏𝑎 + 𝑏2
= 𝑎2
− 2𝑎𝑏 + 𝑏2
• 𝑎2
− 𝑏2
= 𝑎 − 𝑏 𝑎 + 𝑏 = 𝑎2
+ 𝑎𝑏 − 𝑏𝑎 − 𝑏2
𝑥2 + 10𝑥 + 25 = (𝑥)2+2 𝑥 5 +(5)2= 𝑎2 + 2𝑎𝑏 + 𝑏2 = 𝑥 + 5 𝑥 + 5
4𝑎2 − 12𝑎 + 9 = ?
Matematika Terapan
13:23:45
ALJABAR
LATIHAN
Matematika Terapan

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Pertemuan 1 dasar matematika tm

  • 1. Matematika Terapan Atikah Ardi, S.Si., M.Si. Politeknik Negeri Padang
  • 2. Kontrak Perkuliahan 13:23:45 Mata Kuliah : Matematika Terapan Kode Mata Kuliah : TAB3202 SKS : 2 sks Dosen : Atikah Ardi, S.Si., M.Si E-mail : atikahardi76@gmail.com Semester/tahun : I (Ganjil)/ TA 2021-2022 Download materi kuliah : spadame.pnp.ac.id Enrollment code : Jadwal Kuliah : Matematika Terapan
  • 3. Kontrak Perkuliahan Matematika Terapan 13:23:45 Materi : 1. Dasar Matematika 2. Turunan dan aplikasinya 3. Integral dan aplikasinya UTS 4. Metode Kuadrat Terkecil 5. Statistik 6. Teori Peluang UAS
  • 4. Kontrak Perkuliahan 13:23:45 1. Sikap : 10% 2. Tugas : 20% 3. Kuis : 20% 4. UTS : 20% 5. UAS : 30% Komponen Penilaian : Matematika Terapan
  • 5. Kontrak Perkuliahan 13:23:45 Konversi Nilai : Huruf Mutu Angka Mutu Rentang / Batasan A 4 A ≥ 85 A- 3.75 80 ≤ A- < 85 B+ 3.5 75 ≤ B+ < 80 B 3 70 ≤ B < 75 B- 2.75 65 ≤ B- < 70 C+ 2.5 60 ≤ C+ < 65 C 2 55 ≤ C < 60 C- 1.75 50 ≤ C- < 55 D 1 40 ≤ D < 50 E 0 E < 40 Matematika Terapan
  • 6. Kontrak Perkuliahan 13:23:45 Buku Referensi : 1. STROUD, K. A.; BOOTH, Dexter J. Matematika Teknik. Jld. 1. 2003 2. PURCELL, Edwin J.; VARBERG, Dale; RIGDON, Steven E. KALKULUS, jilid 1. 2004. Matematika Terapan
  • 7.
  • 8. ARITMATIKA 13:23:45 Jenis Bilangan : Kompleks Real Imajiner Matematika Terapan
  • 10. ARITMATIKA 13:23:45  Bilangan Real adalah gabungan dari bilangan rasional dan irasional  Bilangan Rasional Q = { 𝑚 𝑛 𝑚 𝑏𝑖𝑙𝑎𝑛𝑔𝑎𝑛 𝑏𝑢𝑙𝑎𝑡 𝑑𝑎𝑛 𝑛 𝑏𝑖𝑙𝑎𝑛𝑔𝑎𝑛 𝑎𝑠𝑙𝑖} Sifat : jika diubah ke bilangan desimal, berhenti dinilai tertentu atau berulang. Contoh : 1 5 = 0,5 ; 1 3 = 0,3333 …  Bilangan Irasional Sifat : tidak dapat diubah ke pecahan biasa, tidak mempunyai desimal berulang. Contoh : π = 3,141592653589, 3, 5, 3 9, 2 𝐿𝑜𝑔 3, dan seterusnya, , , Matematika Terapan
  • 11. ARITMATIKA 13:23:45  Bilangan Asli digunakan untuk menghubungkan banyaknya objek suatu himpunan N = {1, 2, 3, 4, 5, ....}  Bilangan Prima adalah bilangan asli yang mempunyai lebih dari dua faktor K = {2, 3, 5, 7, 11, 11, ....}  Bilangan Cacah adalah gabungan dari bilangan asli dan nol C = {0, 1, 2, 3, 4, 5, ...}  Bilangan bulat negatif adalah lawan dari bilangan asli –N = {–1, –2, –3, –4, –5, ...}  Bilangan Bulat Z = {..., –3, –2, –1, 0, 1, 2, 3, ...}  Bilangan Genap G = {..., –6, –4, –2, 0, 2, 4, 6, ...}  Bilangan Ganjil {..., –5, –3, 1, 3, 5, 7, ...}  Bilangan Pecahan Bentuk x = 𝑚 𝑛 , m bilangan bulat dan n bilangan asli dengan m tidak habis dibagi n Matematika Terapan
  • 12. ARITMATIKA 13:23:45 , , Sifat Bilangan Real 1. Persamaan Transitif, jika a = b, b = c, maka a = c 2. Penjumlahan & Perkalian, a + b, a. b 3. Komutatif, a + b = b + a, a. b = b. a 4. 𝐴𝑠𝑜𝑠𝑖𝑎𝑡𝑖𝑓, 𝑎 + 𝑏 + 𝑐 = 𝑎 + 𝑏 + 𝑐 5. 𝐼𝑑𝑒𝑛𝑡𝑖𝑡𝑎𝑠, 0 + 𝑎 = 𝑎, 1. 𝑎 = 𝑎 6. 𝐼𝑛𝑣𝑒𝑟𝑠, 𝑎 + −𝑎 = 0 ; −𝑎 = 𝑛𝑒𝑔𝑎𝑡𝑖𝑓 𝑎 𝑅𝑒𝑠𝑝𝑖𝑟𝑜𝑘𝑎𝑙, 𝑎. 𝑎−1 = 1 ; 𝑎−1 = 𝑟𝑒𝑠𝑝𝑖𝑟𝑜𝑘𝑎𝑙 7. 𝐷𝑖𝑠𝑡𝑟𝑖𝑏𝑢𝑡𝑖𝑓, 𝑎 𝑏 + 𝑐 = 𝑎𝑏 + 𝑎𝑐, 𝑏 + 𝑐 . 𝑎 = 𝑏. 𝑎 + 𝑐. 𝑎 Matematika Terapan
  • 13. ARITMATIKA 13:23:45 , , Sifat tambahan 1. 𝑎 − 𝑏 = 𝑎 + −𝑏 2. 𝑎 − −𝑏 = 𝑎 + 𝑏 3. −𝑎 = −1 𝑎 4. 𝑎 𝑏 + 𝑐 = 𝑎𝑏 + 𝑎𝑐 5. 𝑎 𝑏 − 𝑐 = 𝑎𝑏 − 𝑎𝑐 6. − 𝑎 + 𝑏 = −𝑎 − 𝑏 7. − 𝑎 − 𝑏 = −𝑎 + 𝑏 8. − −𝑎 = 𝑎 9. 𝑎 0 = 0 10. −𝑎 𝑏 = − 𝑎𝑏 = −𝑎(−𝑏) 11. −𝑎 −𝑏 = 𝑎𝑏 12. 𝑎 1 = 𝑎 13. 𝑎 𝑏 = 𝑎 1 𝑏 , 𝑏 ≠ 0 14. 𝑎 −𝑏 = − 𝑎 𝑏 = −𝑎 𝑏 , 𝑏 ≠ 0 15. − 𝑎 −𝑏 = 𝑎 𝑏 , 𝑏 ≠ 0 16. 0 𝑎 = 0, 𝑎 ≠ 0 17. 𝑎 𝑎 = 1, 𝑎 ≠ 0 18. 𝑎 𝑏 𝑎 = 𝑏, 𝑎 ≠ 0 19. 𝑎 1 𝑎 = 1, 𝑎 ≠ 0 20. 𝑎 𝑏 . 𝑐 𝑑 = 𝑎𝑐 𝑏𝑑 , 𝑏, 𝑑 ≠ 0 21. 𝑎𝑏 𝑐 = 𝑎 𝑐 . 𝑏 = 𝑎 𝑏 𝑐 , 𝑐 ≠ 0 22. 𝑎 𝑏𝑐 = 𝑎 𝑏 . 1 𝑐 = 1 𝑏 . 𝑎 𝑐 23. 𝑎 𝑏 = 𝑎 𝑏 . 𝑐 𝑐 = 𝑎𝑐 𝑏𝑐 , 𝑏, 𝑐 ≠ 0 24. a 𝑐 + 𝑏 𝑐 = 𝑎+𝑏 𝑐 , 𝑐 ≠ 0 25. 𝑎 𝑏 + 𝑐 𝑑 = 𝑎𝑑+𝑏𝑐 𝑏𝑑 , 𝑏. 𝑑 ≠ 0 26. 𝑎 𝑏 𝑐 𝑑 = 𝑎 𝑏 − 𝑐 𝑑 = 𝑎 𝑏 . 𝑑 𝑐 = 𝑎𝑑 𝑏𝑐 , 𝑏, 𝑐, 𝑑 ≠ 0 27. 𝑎 𝑏 𝑐 = 𝑎 − 𝑏 𝑐 = 𝑎. 𝑐 𝑏 = 𝑎𝑐 𝑏 , 𝑏 , 𝑐 ≠ 0 Matematika Terapan
  • 15. ARITMATIKA 13:23:45 , , Aturan dasar eksponen dan akar 𝑎𝑚 eksponen basis 1. 𝑎𝑚× 𝑎𝑛 = 𝑎𝑚+𝑛 2. 𝑎𝑚 ÷ 𝑎𝑛 = 𝑎𝑚−𝑛 3. (𝑎𝑚)𝑛= 𝑎𝑚𝑛 4. 𝑎0= 1 5. 𝑎−𝑚= 1 𝑎𝑚 6. 𝑎 1 𝑚= 𝑚 𝑎 7. 𝑎 𝑛 𝑚= (𝑚 𝑎)𝑛 atau 𝑚 𝑎𝑛 Matematika Terapan
  • 16. ARITMATIKA 13:23:45 , , Sederhanakan! E = (5x2 y− 3 2z 1 4)2 × (4x4 y2 z)− 1 2 E=? 6𝑥−4 × 2𝑥3 8𝑥−3 = 12 8 . 𝑥−4+3 𝑥−3 = 12 8 . 𝑥−1 𝑥−3 = 3 2 . 𝑥−1+3 = 3 2 𝑥2 Matematika Terapan
  • 17. ALJABAR 13:23:45 Aturan Aljabar 1. hukum komutatif • x + y = y + x • xy = yx Penambahan & perkalian adalah operasi komutatif • x - y ≠ y – x kecuali x = y dan • x/y ≠ y/x kecuali x = y dan keduanya tidak sama dengan 0 Pengurangan & pembagian bukan operasi komutatif 2. hukum asosiatif • x + (y+z) = (x+y) + z dan • x(yz)=(xy)z=xyz • x(y+z) = xy + xz Matematika Terapan
  • 18. ALJABAR 13:23:45 3. hukum distributif • x(y+z) = xy + xz dan (x+y)z = xz + yz • x(y-z) = xy - xz dan (x-y)z = xz – yz • (x + y) / z = (x/z) + (y/z) • x / (y +z) ≠ (x/y) + (x/z) Matematika Terapan
  • 19. ALJABAR 13:23:45 Bentuk Pernyataan Aljabar 𝟐𝒙 + 𝟑𝒚 + 𝟓 Variabel Koefisien Konstanta 3 Suku, derajat 1 𝒙𝟐 + 𝟑𝒙 − 𝟓 3 Suku, derajat 2 1 𝟒𝒖𝒗 − 𝟕𝒖𝒛 − 𝟔𝒘𝒛 + 𝟐𝒖𝒗 + 𝟑𝒘𝒛 = 𝟔𝒖𝒗 − 𝟕𝒖𝒛 − 𝟑𝒘𝒛 Matematika Terapan
  • 20. ALJABAR 13:23:45 𝒚 + 𝒙 𝟖𝒙 − 𝒚 − 𝒙 𝟒𝒙 = 𝒚 𝟖𝒙 + 𝒙 𝟖𝒙 − 𝒚 𝟒𝒙 + 𝒙 𝟒𝒙 = = 𝟑 𝟖 − 𝒚 𝟖𝒙 = 𝟏 𝟖 𝟑 − 𝒚 𝒙 = 𝟏 𝟖𝒙 (𝟑𝒙 − 𝒚) Matematika Terapan
  • 21. 13:23:45 ALJABAR Perkalian dan Pembagian Pernyataan Aljabar (2𝑥 + 5)(𝑥2 + 3𝑥 + 4) 𝑥2 + 3𝑥 + 4 2𝑥 + 5 2𝑥3 + 6𝑥2 + 8𝑥 5𝑥2 + 15𝑥 + 20 2𝑥3 + 11𝑥2 + 23𝑥 + 20 (2𝑥 + 6)(4𝑥3 − 5𝑥 − 7) Matematika Terapan
  • 22. 13:23:45 ALJABAR Perkalian dan Pembagian Pernyataan Aljabar 12𝑥3 − 2𝑥2 − 3𝑥 + 28 12𝑥3 + 16𝑥2 4𝑥2 − 6𝑥 + 7 3𝑥 + 4 −18𝑥2 − 3𝑥 −18𝑥2 − 24𝑥 21𝑥 + 28 21𝑥 + 28 4𝑥3 − 0𝑥2 + 13𝑥 + 33 2𝑥 + 3 Matematika Terapan
  • 23. 13:23:45 ALJABAR Faktorisasi Aljabar • 35𝑥2𝑦2 − 10𝑥𝑦3 = 5𝑥𝑦2(7𝑥 − 2𝑦) • 10𝑥 + 8 = 2(5𝑥 + 4) • 𝐹𝑃𝐵 𝐾𝑜𝑒𝑓𝑖𝑠𝑖𝑒𝑛 35 𝑑𝑎𝑛 10 = 5 • 𝐹𝑃𝐵 𝑝𝑒𝑟𝑝𝑎𝑛𝑔𝑘𝑎𝑡𝑎𝑛 𝑥 = 𝑥 • 𝐹𝑃𝐵 𝑝𝑒𝑟𝑝𝑎𝑛𝑔𝑘𝑎𝑡𝑎𝑛 𝑦 = 𝑦2 • 8𝑥4𝑦3 + 6𝑥3𝑦2 Faktorkan! • 15𝑎3𝑏 − 9𝑎2𝑏2 Matematika Terapan
  • 24. 13:23:45 ALJABAR Faktorisasi Aljabar dengan pengelompokkan 2𝑎𝑐 + 6𝑏𝑐 + 𝑎𝑑 + 3𝑏𝑑 2𝑎𝑐 + 6𝑏𝑐 𝑎𝑑 + 3𝑏𝑑 = 2𝑐 𝑎 + 3𝑏 + 𝑑 𝑎 + 3𝑏 = (𝑎 + 3𝑏)(𝑎𝑐 + 𝑑) • (𝑎 + 𝑏)2 = 𝑎 + 𝑏 𝑎 + 𝑏 = 𝑎2 + 𝑎𝑏 + 𝑏𝑎 + 𝑏2 = 𝑎2 + 2𝑎𝑏 + 𝑏2 • (𝑎 − 𝑏)2 = 𝑎 − 𝑏 𝑎 − 𝑏 = 𝑎2 − 𝑎𝑏 − 𝑏𝑎 + 𝑏2 = 𝑎2 − 2𝑎𝑏 + 𝑏2 • 𝑎2 − 𝑏2 = 𝑎 − 𝑏 𝑎 + 𝑏 = 𝑎2 + 𝑎𝑏 − 𝑏𝑎 − 𝑏2 𝑥2 + 10𝑥 + 25 = (𝑥)2+2 𝑥 5 +(5)2= 𝑎2 + 2𝑎𝑏 + 𝑏2 = 𝑥 + 5 𝑥 + 5 4𝑎2 − 12𝑎 + 9 = ? Matematika Terapan