A. Suatu fungsi f(x) = ax + b. Jika f(-2) = -2 dan f(3) = 23 maka nilai dari f(1) + f(4) =... b. Diketahui h:x (tanda panah) ax + b, h(-2) = 11 dan h(1) = 2. Nilai dari h(5) =...
rafindralibrant
A. F(x) = ax + b. mencari nilai a sama b dulu a : f(-2) = -2a + b = -2 f(3) = 3a + b = 23
mencari nilai a sama b dulu
a :
f(-2) = -2a + b = -2
f(3) = 3a + b = 23
......................... kurangin -2a-3a = -5a
-2-23 = -25
a.= -25:(-5) = 5
b.
ambil contoh
f(-2) = -2x5+b = -2
f(-2) = -10 + b = -2
b = -2 + 10 = 8
f(1) = 1x5 + 8 = 13
f(4) = 4x5 + 8 = 28
B. mencari a sma b
a:
h(x) = ax + b
h(-2) = -2a + b = 11
h(1) = 1a + b = 2
..................... kurangin -2a-1a = -3a
11-2 = 9
a = 9:-3 = -3
b.
h(-2) = -2x-3 + b = 11
= 6 + b =11
b = 11 - 6 = 5
h(5) = 5x(-3) + 5 = 10
itu insyallah bener