Misalkan ada suatu fungsi f dari x ke 4x-2 a. tentukan rumus fungsinya b. tentukan bayangan (daerah hasil) dari 2,-2,4,-4 c. jika 8 adalah bayangan dari p,tentukan nilai p
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A. f(x) = 4x -2 b. f(2) = 4(2) -2 = 8 -2 = 6 f(-2) = 4(-2) -2 = -10 f(4) = 4(4) -2 = 14 f(-4) = 4(-4) -2 = -18 c. f(p) = 4(p) -2 = 8 = 4p -2 = 8 = 4p = 8 +2 = 4p = 10 = p = 10/4 = p = 2,5 Jadi, nilai p adalah 2,5.
b. f(2) = 4(2) -2
= 8 -2 = 6
f(-2) = 4(-2) -2 = -10
f(4) = 4(4) -2 = 14
f(-4) = 4(-4) -2 = -18
c. f(p) = 4(p) -2 = 8
= 4p -2 = 8
= 4p = 8 +2
= 4p = 10
= p = 10/4
= p = 2,5
Jadi, nilai p adalah 2,5.
b. 1. f(2)= 4.2-2 =8-2 = 6
2. f(-2) = 4(-2)-2 = -8-2 =-10
3. f(4) = 4.4-2 = 16-2 = 14
4. f(-4)= 4(-4)-2 = -16-2 = -18
maaf kalo salah