Complex Analysis L01: Overview & Motivation, Complex Arithmetic, Eulers Formula & Polar Coordinates @Eigensteve
Complex Analysis L01: Overview & Motivation, Complex Arithmetic, Eulers Formula & Polar Coordinates  @Eigensteve
Uploaded January 2023 | Updated September 2026, 2 weeks ago
This is the first overview lecture in a new short-course on complex analysis. Here we motivate and introduce complex numbers z=x+iy, discuss how they are solutions to differential equations, and explain how to perform basic arithmetic, such as addition, subtraction, multiplication, and division. We also introduce Euler's formula and complex numbers in polar coordinates.

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This video was produced at the University of Washington

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0:00 Introduction and motivation
10:00 Euler's formula
11:27 Complex addition, subtraction, multiplication, and division
17:33 Complex numbers in polar coordinates: Radius and phase angle
26:16 Where this is going
Complex Analysis L01: Overview & Motivation, Complex Arithmetic, Eulers Formula & Polar CoordinatesDensity Estimation with Gaussian Mixture Models (GMM) and Empirical Priors[7/8] Control for Societal-Scale Challenges: Road Map 2030 [Ethics, Fairness, & Regulatory Issues]Bayes Theorem (with Example!)2x2 Systems of ODEs: Imaginary Eigenvalues and Center Fixed PointsCentral Limit Theorem Example & Hypothesis TestingSet Theory in Probability: Sample Spaces and Events[1/8] Control for Societal-Scale Challenges: Road Map 2030 [Introduction]Complex Analysis L05: Roots of Unity and Rational Powers of zThe Central Limit TheoremA Particle in a Potential Well: Nonlinear DynamicsNumerical Differentiation: Second Derivatives and Differentiating Data
Steve Brunton |

Complex Analysis L01: Overview & Motivation, Complex Arithmetic, Euler's Formula & Polar Coordinates

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