700 × 700 =
f(x) = 6f + f × 4 – f
f(5) = ………..
z(x) = 10z + 4 – z × 2
z(4) = ……….
Q. menantang
Jawaban:
- Nomor 1
700 × 700
= 490.000
- Nomor 2
mungkin f itu x ya
f(x) = 6x + x × 4 – x
f(5) = 6(5) + 5 × 4 – 5
f(5) = 30 + 5 × 4 – 5
f(5) = 30 + 20 – 5
f(5) = 50 – 5
f(5) = 45
- Nomor 3
mungkin z itu x ya
z(x) = 10x + 4 – x × 2
z(4) = 10(4) + 4 + 4 × 2
z(4) = 40 + 4 – 4 × 2
z(4) = 40 + 4 – 8
z(4) = 44 – 8
z(4) = 36