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Dik :
f(-1) = -2
f(3) = 7
g(-1) = 3
g(3) = 2
h(x) = f(x).g(x)
h(x) dibagi (x+1) (x-3)
Dit : sisa
jwb:
f(-1) = -a + b = -2
f(7) = 3a + b = 7
------------------------- -
-4a = -9 -> a = 9/4
g(-1) = -a + b = 3
g(2) = 3a + b = 2
------------------------- -
-4a = 1 -> a = -1/4
h(-1) = f(-1).g(-1) = -2.3 = -6 --> -a + b = -6
h(3) = f(3).g(3) = 7.2 = 14 --> 3a + b = 14
-------------------- -
-4a = -20
a = 5
substitusi
3a + b = 14
15 + b = 14
b = -1
sisa = ax + b = 5x -1
Jawaban terbaik yaa..