Soal/Latihan Fungsi dan Grafik pertemuan ke-9
Soal 2. f(t) = 1/t 4. g(t) = 1/1+t 6. f(x) = 8x, carilah dan gambarkan f(-2) sd f(2) 8. gambarlah fungsi f(x) = 2x 2 + 4x + 5 10. f(x) = 1 + x 2 Jawab 2. Df = {x| x ≠ 0, x ∈ R} Rf = {y| y ≠ 0, y ∈ R} 4. Domain = 1 + t ≥ 0 t ≥ -1 Df = {t | t ≥ -1, t ∈ R} Rf = {t | t ∈ R} 6. f(-2) = 8(-2) = -16 f(-1) = 8(-1) = -8 f(0) = 8(0) = 0 f(1) = 8(1) = 8 f(2) = 8(2) = 16 x f(x) = 8x -2 -16 -1 -8 0 0 1 8 2 16 8. (-3, 11) (-2, 5) (-1, 3) (0, 5) (1, 11) 10. Df : { x | x ∈ R } Rf : { x | x ∈ R }