1. Suatu pemetaan di rumuskan dengan f(x) = 5x - 2. Jika f(a) = 18, maka nilai a yang mungkin adalah... 2. Suatu fungsi dirumuskan f(x) = 9 - 3x. Jika f(p) = 15, nilai p adalah...
Andesta
F (a) = 18 jadi f(a) = 5a-2=18 5a = 18+2 5a=20 a=20/5 = 4
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syahrianirajuni
1. dik f(x) = 5x-2 f(a) = 18 nilai a ??????? jdi f(a) =5a-2 18= 5a-2 18+2=5a 20= 5a a= 20/5 = 4
jadi f(a) = 5a-2=18
5a = 18+2
5a=20
a=20/5 = 4
f(a) = 18
nilai a ???????
jdi f(a) =5a-2
18= 5a-2
18+2=5a
20= 5a
a= 20/5 = 4
2. dik f(x) = 9-3x
f(p) = 15
nilai p ??????????/
f(p) = 9-3p
15 = 9-3p
15-9 = 3 p
6 = 3p
p = 6/3 2
semoga bermanfaat