Gradient Descent (part 2)

In part two, we look at the effects of the parameter gamma, the possibility of getting stuck in a local minimum, and the ability to use a numerical approximation for the derivative or gradient.

Part 1: https://youtu.be/trvgzYjUr-Y
Part 3: https://youtu.be/Twxe59IjHDk

Github: https://github.com/kpmooney/numerical_methods_youtube/tree/master/gradient_descent

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