Dik : f(4-3x) = 6x+5
Dit : i rumus fungsi x?
ii f(-8) + f(4)
iii f(a+3b)
Dit : i rumus fungsi x?
ii f(-8) + f(4)
iii f(a+3b)
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p = 4 - 3x
3x = 4 - p
x = (4 - p) / 3
f(p) = 6(4-p)/3 + 6 = 2(4-p) + 6= 8 -2p + 6= 14-2p
f(x) = 14 - 2c
f(-8) = 14 - 2(-8) = 14 + 16 = 30
f(4) = 14 - 2(4) = 6
ii = 36
f(a+3b) = 14 - 2(a + 3b) = 14 - 3a - 6b