NumPy: Fast Numerical Computing

Linear Algebra & Random

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Matrix Multiplication — @ vs * and the Mental Model

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IN THIS LESSON

YOU’RE LEARNING TO

↗multiply matrices with the @ operator and np.dot, and distinguish dot product from element-wise multiplication

↗transpose arrays with .T

↗use np.linalg.solve, np.linalg.inv, and np.linalg.eig for basic linear algebra

↗create a reproducible random number Generator with np.random.default_rng and a seed

↗generate random integers, uniform floats, and normally-distributed samples