diket fungsi f(×)=2×+5 dan g(×)=x2-1 tentukan . ( f+g)(x) (f-g)(x) .
Matematika
alifiahradem965
Pertanyaan
diket fungsi f(×)=2×+5 dan g(×)=x2-1 tentukan . ( f+g)(x) (f-g)(x) .
1 Jawaban
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1. Jawaban ahreumlim
f(x)=2x+5
g(x)=x²-1
(f+g)(x) = f(x) + g(x)
= 2x+5 + x²-1
= x² + 2x + 4
(f-g)(x) = f(x) - g(x)
= 2x+5 - x² + 1
= - x² + 2x + 6