DOC: fix indices on transfer function in doc/conventions (#227)

murrayrm · murrayrm · commit d3921db081ee · 2018-07-13T21:21:17.000-07:00
diff --git a/doc/conventions.rst b/doc/conventions.rst
@@ -45,8 +45,8 @@ transfer functions
 .. math::
 
   G(s) = \frac{\text{num}(s)}{\text{den}(s)}
-       = \frac{a_0 s^n + a_1 s^{n-1} + \cdots + a_n}
-              {b_0 s^m + b_1 s^{m-1} + \cdots + b_m},
+       = \frac{a_0 s^m + a_1 s^{m-1} + \cdots + a_m}
+              {b_0 s^n + b_1 s^{n-1} + \cdots + b_n},
 
 where n is generally greater than or equal to m (for a proper transfer
 function).
