diketahui f(×)=3×+10 jika f(-1)=a dan f(b)= -2,nilai a+b
Matematika
azzahraaz
Pertanyaan
diketahui f(×)=3×+10 jika f(-1)=a dan f(b)= -2,nilai a+b
1 Jawaban
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1. Jawaban Adisy
f(x)=3x+10
f(-1)= 3.(-1) + 10 = -3 + 10 = 7 (a)
f(b)= -2
3.b+10 = -2
3b = -12
b= -4 , jadi a+b = 7 + (-4) = 3.