examples/differentiation.py

   1 import sys
   2 sys.path.append("..")
   3
   4 import sympy
   5 a=sympy.Symbol('a')
   6 b=sympy.Symbol('b')
   7 e=(a+2*b)**5
   8 print e
   9 print e.diff(a)
  10 print e.diff(b)
  11 print e.diff(b).diff(a,3)
  12 print e.expand().diff(b).diff(a,3)