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๐—Œ๐—’ฮฑ๐–ฟฮฑ'๐—Œ ษฆโฑบ๐“ฃ๐–พ๐—’ ๐“ฃโฑบ๐—๐–พ๐—Œ ๐Ÿฏ๐Ÿฅจ

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ใƒšใƒผใ‚ธ1:

138
MAT. W
B. Pugi
No. Sonin
Date: 20-10-2025
Bad Der
(un)
Sathan &
Barisan Deret
Sumlah (total (Sn)
Aritmatika Geometri Arit
Geo
matika
metri
BARISAN
@Aritmatika
Geometri
2.
DERET
-
Un
= a + (n-1)b
1
bede
J
n-1
ramo
kalan gak
contoh: 3,5,7,9,-- } kalau gak โ˜นl, bedanya dikit
Un = an
contoh = 5,25,125..
1. bedanya jauh
@Aritmatika
n
Sn- ^ (2a + (n-1) b) atau Sn = n (a+un)
2
a (rn-1)
Geometri
Sn=
r-1
a (1-r^)
SA=
1-r
fr<
#
Contoh Soal !
? 46=--?
12,-5,-81.
Uโ‚ = a suku pertama
a = -2
b = U2-Uโ‚
b=-5-(-2)
b=-5+2
b = -3
Un= a(n-1)b
U6=-2+(6-1)-3
46 =
-2+(5)-3
=-2-15
16-17 11.
=
Big BOSS

ใƒšใƒผใ‚ธ2:

12. U10 = 5
;
415710
U10 =
+96=5
U15 = ฮฑ +146=-10 G
-56=-15
b = 31
a+9b=5
9+9(3)=5
9+27=5
9=5-27
No.
Senin
Date: 20-10-2025
Un = a + (n-1)b
a = -22
3. 2,4, 8, 16, -,
a=2
F= Uโ‚‚ =
41
Un= ar
4
-2
2
U12= 2.22-1
412 = 2.2"
U12=---?
F
U122.2.048
U12 = 4.096
1/2+4+8+16+32,.
S8=
1114
7
9=2
r=2r>1 =
a (1-1)
Se
Sn=
58=2(2-1)
=
20256-1)
r-l
2-1
S8
= 2.255
U3 = 16; Us = 64
43 = rยฒ = 16
r = ___? ฮฑ = ___? Un = ar^-1
88
= 510
us = 4 = 64
ะณยฒ = 4
r
:
=
โˆš
r = 21
6. Luar Rumah 1
=
panjay x lebar
arยฒ = 16
9.22=16
9.4 = 16
a =
a=410
L
=
C10+ โˆš10) x (6+โˆš8)
=
60+ 10+ 6UTร“ + โˆšBO
=
60 + 10 โˆš4.2 + 6VTO + V16. V5.
60 + 10.22 +6โˆšTO + 4โˆš5
= 60 + 20โˆš2 +6โˆšTO +4โˆš5 11
Big BOSS