MAINT: more docs

Author: MateusStano

rocketpy/Function.py

@@ -2188,6 +2188,10 @@ def findInput(self, val, start, tol=1e-4):
         ----------
         val : int, float
             The value of the output.
+        start : int, float
+            Initial guess of the output.
+        tol : int, float
+            Tolerance for termination.
 
         Returns
         -------
@@ -2204,6 +2208,13 @@ def average(self, lower, upper):
         """
         Returns the average of the function.
 
+        Parameters
+        ----------
+        lower : float
+            Lower point of the region that the average will be calculated at.
+        upper : float
+            Upper point of the region that the average will be calculated at.
+
         Returns
         -------
         result : float