TRV: fix typos pointed out by @namannimmo10

murrayrm · murrayrm · commit 70a6cf91559a · 2021-06-13T11:51:25.000-07:00
diff --git a/control/frdata.py b/control/frdata.py
@@ -75,9 +75,9 @@ class FrequencyResponseData(LTI):
     w : iterable of real frequencies
         List of frequency points for which data are available.
     smooth : bool, optional
-        If ``True``, create an interpoloation function that allows the
+        If ``True``, create an interpolation function that allows the
         frequency response to be computed at any frequency within the range of
-        frquencies give in ``w``.  If ``False`` (default), frequency response
+        frequencies give in ``w``.  If ``False`` (default), frequency response
         can only be obtained at the frequencies specified in ``w``.
 
     Attributes
diff --git a/control/xferfcn.py b/control/xferfcn.py
@@ -99,7 +99,7 @@ class TransferFunction(LTI):
     ninputs, noutputs, nstates : int
         Number of input, output and state variables.
     num, den : 2D list of array
-        Polynomial coeffients of the numerator and denominator.
+        Polynomial coefficients of the numerator and denominator.
     dt : None, True or float
         System timebase. 0 (default) indicates continuous time, True indicates
         discrete time with unspecified sampling time, positive number is
@@ -143,7 +143,7 @@ class TransferFunction(LTI):
     creation of transfer functions.  For example,
 
     >>> s = TransferFunction.s
-    >>> G  = (s + 1)/(s**2 + 2*s + 1)
+    >>> G = (s + 1)/(s**2 + 2*s + 1)
 
     """
 
