KUIS MATEMATIKA Kode: 01-6-6

Mapel : Matematika
Kelas : VIII SMP
Bab : Fungsi

Pembahasan :
f(1/2) = 12(1/2) - 5
f(1/2) = 6 - 5
f(1/2) = 1

f(-1) = (-1)² + 2(-1) - 3
f(-1) = 1 - 2 - 3
f(-1) = -4

f(2/3) = 12(2/3) - 5
f(2/3) = 8 - 5
f(2/3) = 3

f(0) = 0² + 2(0) - 3
f(0) = -3

f(3/4) = 12(3/4) - 5
f(3/4) = 9 - 5
f(3/4) = 4

f(1) = 12(1) - 5
f(1) = 7

Maka...
f(1/2) . f(-1) + f(2/3) . f(0) + f(3/4) . f(1)
= (1)(-4) + (3)(-3) + (4)(7)
= - 4 - 9 + 28
= 15

Jawaban : C

Materi: Fungsi

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