added calculation for simplify_exponential_function

src/main/py/read_math_function.py

@@ -81,3 +81,5 @@ def simplify_exponential_function(type, function):
     coefficient, exponent = function.split('x^')
     coefficient = int(coefficient) if coefficient else 1
     exponent = int(exponent)
+    new_coefficient = coefficient * exponent
+    new_exponent = exponent - 1