diff --git a/Week04/functions_melda_gungor.py b/Week04/functions_melda_gungor.py
new file mode 100644
index 00000000..987e46ab
--- /dev/null
+++ b/Week04/functions_melda_gungor.py
@@ -0,0 +1,39 @@
+custom_power = lambda x=0, /, e=1: x**e
+
+def custom_equation(x: int = 0 , y: int = 0 , / , a: int =1 , b: int =1, * , c: int=1) -> float:
+    """
+    Calculates the custom equation.
+    :param x: first base
+    :type x: int
+    :param y: second base
+    :type y: int
+    :param a: exponent for x
+    :type a: int
+    :param b: exponent for y
+    :type b: int
+    :param c: divisor
+    :type c: int
+    :return: the result of (x**a + y**b) / c
+    :rtype: float 
+    """
+
+    return float((x**a + y**b) / c)
+
+
+def fn_w_counter() -> (int, dict[str,int]):
+    if not hasattr(fn_w_counter,"total_count"):
+        fn_w_counter.total_count = 0
+        fn_w_counter.call_records = {}
+
+    caller = __name__
+    fn_w_counter.total_count += 1
+
+    if caller not in fn_w_counter.call_records:
+        fn_w_counter.call_records[caller] = 1
+    else:
+        fn_w_counter.call_records[caller] += 1
+
+    return fn_w_counter.total_count, fn_w_counter.call_records
+
+
+