PEMBAHASAN TO
INTENSIF 3
MATEMATIKA
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Bagian untuk anak ketiga
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a = 9, dan b = -4
U
n= a + (n – 1)b
U
36= 9 + (36 – 1)(-4)
U
36= 9 + (-140)
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Seharusnya,
a = = 5
-1
r = = 5
U
n
= a r
n-1
U
n
= 5
-1
5
n-1
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3 – x (3 – x)
6 – 2x 3 – x
6 – 3 – x + 2x
3 x
x 3
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16p
4– q
4= (4p
2– q
2)(4p
2+ q
2)
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3x – 2y =
6
● 2
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A = { 1, 2, 4, 3,
8}
B
c= {1, 2, 4, 7,
9}
A ∩ B
c= {1. 2.
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1. Cari yang gemar keduanya dulu
= (35 + 30 + 6) – 50
= 71 – 50
= 21
Banyak anak yang hanya gemar music saja berarti: Gemar music – gemar keduanya
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Sudut
Sisi
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A
B C
R
Q P
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f
(c) = 5c – 3 = 2
5c = 2 + 3
5c = 5
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-3 -1
4 13
+ 7
+ 14
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24 cm 14 cm
12 cm 5 cm
13 cm 13 cm
Panjang pagar = Keliling Trapesium = 24 + 13 + 14 + 13 =
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R = ….? r = 5 cm
GSPD = 16 cm
AB = 20 cm
R + r = R + 5
Pasangan tripel Pythagoras:
12
, 16, 20
R + 5 = 12
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Garis
Sumbu
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R = 8 r = 6
t = 15 t = 10
V air A + V air B = Vol tabung A penuh
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Luas balok tanpa tutup = 8 . 8 + 4 . 8 . 11
Luas balok tanpa tutup = 64 + 352 =
416
Luas segitiga = 4 . ½ . 8 . 5 =
80
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10
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1 2 3 4 5 6
1 2 3 4 5 6 (1,1 ) (1,2 ) (1,3 ) (1,4 ) (1,5 ) (1,6) (2,1 ) (2,2 )
(2,3) (2,4) (2,5) (2,6) (3,1
)
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N (Merah atau Biru) = 5 + 6 =
11
