[_odey]

Not a full course I'd say, but I've used this one to learn the math behind deep neural networks and code my own from scratch in elixir and C:

http://neuralnetworksanddeeplearning.com/

[vasili111]

What is required math for starting Ng course?

[_odey]

Can't tell you about Andrew Ng's coruse as I haven't done that, but for Michael Nielsen's course it was Matrices and Partial Derivatives. I'm assuming it's quite similar.

[lagrange77]

Yes, this is really good! Andrew Ng, too.