04: Linear Regression with Multiple Variables

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Linear regression with multiple features

New version of linear regression with multiple features
Gradient descent for multiple variables

Gradient Decent in practice: 1 Feature Scaling

Learning Rate α 
Make sure gradient descent is working
Features and polynomial regression
Normal equation

How does it work?
Example of normal equation

General case


When should you use gradient descent and when should you use feature scaling?
Normal equation and non-invertibility