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g(10)=8
g(-2)=2
ditanya nilai a dan b...?
jawab
g(10)=8
g(10)
10a-b=8.......................(1)
g(-2)=2
g(-2)
-2a-b=2.......................(2)
eliminasi b di pers 1 dan 2
10a-b=8
-2a-b=2
_______-
12a=6
a=6/12
a=1/2
sub a=1/2 ke per 1
10(1/2)-b=8
5-b=8
-b=8-5
b=-3
jadi nilai a dan b adalah 1/2 dan -3