functions.py

def f(x: int) -> int:
   return (x + (1/x)) / 2


def f2(x: int, y: int) -> int:
   return x**2*y + 3*y**3


def g(x: int) -> int:
   return g(x-3) + 2*g(x-2) if x >=3 else 1


def g2(x: int) -> int:
   return g(x-1) + g(x-2) if x >= 2 else 1


def main():
   x = int(input("x = "))
   y = int(input("y = "))
   print(f"\nf függvény: {f(x)}")
   print(f"f2 függvény: {f2(x, y)}")
   print(f"g függvény, ha x=12: {g(12)}")
   print(f"g2 függvény, ha x=9: {g2(9)}")


if __name__ == "__main__":
   main()