I am trying to calculate some thing called directional derivatives of a vector b (which defined in attached file as an example)
to calculate the directional derivatives of the vector b .
the result of the example is also in the attached file.
I serached in goolge to find how we can calculate the directional derivatives, but I could not find any function in python to do this kind of calculation ; the only thing I found which do derivative in python is:
scipy.misc.derivative(func, x0, dx=1.0, n=1, args=(), order=3)
this function dose not give me the right answer .
Could you please help me to solve this probelm.