Question

No 16, 17, 18 gimana kerjanya ??
Tolong kasih jalannya !!

Answer 1

16. C = BA
C=
10...0
-2...4

C^-1 =
4/40.....0
-2/40...10/40

20 C^-1 =
2....0
-1...5

17. 
u8 = 37
u11= 52
---------(-)
(8-11)b = (37 - 52)
- 3b = - 15
b = 5
u8 = 37 -- > a = 37- 7b
a = 37-35
a = 2

S10 = 10/2 {2a+ 9b)
S10 = 5(4 + 45) = 225

18.
a= 6
r = 3/6 = 1/2
S~ = a / ( 1- r)
S~ = 6/(1- 1/2)
s~ = 6/(1/2) 
s ~ = 12
..