Diketahui f(2x+1) =4x2 + 2x - 5 maka f(2) =

Fungsi

f(2x + 1) = 4x² + 2x - 5

f(2) = f(2x + 1)
2 = 2x + 1
2x = 1
x = 1/2

f(2x + 1) = f(2) = 4(1/2)² + 2(1/2) - 5
f(2) = 4 . 1/4 + 1 - 5
f(2) = 1 + 1 - 5
f(2) = -3