f(p) = p(p²) + p!! × 2p
-
Kaki langit
i
l
a
i
f
(
3
)
f(3) = 3(3²) + 3!! × 2(3)
f(3) = 3(3 × 3) + (3 × 1) × (2 × 3)
f(3) = 3(9) + 3 × 6
f(3) = (3 × 9) + 3 × 6
f(3) = 27 + 3 × 6
f(3) = 27 + 18
f(3) =
4
5
–
-
N
i
l
a
i
f
(
5
)
f(5) = 5(5²) + 5!! × 2(5)
f(5) = 5(5 × 5) + (5 × 3 × 1) × (2 × 5)
f(5) = 5(25) + (15 × 1) × 10
f(5) = (5 × 25) + 15 × 10
f(5) = 125 + 15 × 10
f(5) = 125 + 150
f(5) =
2
7
5
–
-
N
i
l
a
i
f
(
1
)
+
f
(
2
)
f(1) = 1(1²) + 1!! × 2(1)
f(1) = 1(1 × 1) + 1 × 2
f(1) = 1(1) + 1 × 2
f(1) = 1 + 1 × 2
f(1) = 1 + 2
f(1) = 3
f(2) = 2(2²) + 2!! × 2(2)
f(2) = 2(2 × 2) + 2 × (2 × 2)
f(2) = 2(4) + 2 × 4
f(2) = (2 × 4) + 2 × 4
f(2) = 8 + 2 × 4
f(2) = 8 + 8
f(2) = 16
f(1) + f(2)
= 3 + 16
=
1
9
