Diketahui fungsi kuadrat y=-x²+bx+c turun ketika x<1 dan melalui titik (3, 1) maka b log c =
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Verified answer
Xp= -b/2a1 = -b/-2
b=2
grafik melalui (3,1) artinya
1= -(3²)+2(3)+c
1= -9+6+c
c= 4
jadi