Diketahui fungsi f(x)=3×2-2x-5. Nilai f(-1/2) =

Diketahui fungsi f(x)=3×2-2x-5. Nilai f(-1/2) = ….
A. −41/4
B. −31/4
C. 31/4
D. 41/4

Jawab: B

Diketahui fungsi f(x) = 3x2 – 2x – 5
Substitusi nilai x = −1/2 pada persamaan f(x) = 3x2 – 2x – 5 untuk mendapatkan nilai f(−1/2).

Menentukan nilai f(−1/2):
f(x) = 3x2 – 2x – 5
f(−1/2) = 3(−1/2)2 – 2(−1/2) – 5
f(−1/2) = 3(1/4) + 1 – 5
f(−1/2) = 3/4 + 1 – 5 = –3 1/4

Jadi, Nilai f(-1/2) = –3 1/4

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.