Question

Tolong dijawab
1.suatu fungsi f(x)=-2x²+4x-1, dengan daerah asal (-1,0,1) daerah hasilnya adalah

Answer 1

  f(x) = 2x² + 4x - 1
f(- 1) = 2.(- 1)² + 4.(- 1) - 1
        = 2 . 1 - 4 - 1
        = 2 - 4 - 1
        = - 3
  f(0) = 2 .(0)² + 4 . 0 - 1
        = 0 - 0 - 1
        = - 1
  f(1) = 2 .(1)² + (1) - 1
        = 2 . 1 + 4 - 1
        = 2 + 4 - 1
        = 5
daerah hasil = { - 3 , 0 , 5}

Answer 2

F(x) = -2x + 4x -1 . Jadi . F(-1)= -2(-1²)+4(-1)-1 = -2(1)-4-1 = -2-4-1=-7 Jadi f (-1) = -7 . F(0)=-2(0²)+4(0)-1 = -2(0)+0-1 =-1 Jadi f(0)= -1 . F(1)=-2(1²)+4(1)-1 = -2+4-1 = 1 Jadi f(1)= 1