f(1) = 4
f(2) = 25
f(n) = f(n - 2). S (n - 1)
f(3) =
![f1 4 f2 25 fn fn 2 S n 1 f3 class=](https://us-static.z-dn.net/files/dea/b0ee3a24cad74a6d41849099bcaf7546.png)
Answer:
[tex]f(3) = f(3 - 2) \times f(3 - 1)[/tex]
[tex]f(3) = f(1) \times f(2)[/tex]
[tex]f(3) = 4 \times 25[/tex]
[tex]4 \times 25 = 100[/tex]