Differential Equations: Fourier Series and Partial Differential Equations

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Electrical engineering: Fourier Series introduction

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The Fourier Series allows us to model any arbitrary periodic signal with a combination of sines and cosines. In this video sequence Sal wor…

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Electrical engineering: Visualizing the Fourier expansion of a square wave

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Visualize the Fourier expansion of a square wave. A square wave can be approximated by adding odd harmonics of a sine wave. Electrical engi…

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Electrical engineering: First term in a Fourier series

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The first term in a Fourier series is the average value (DC value) of the function being approximated. Electrical engineering Learn about e…

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Electrical engineering: Fourier coefficients for sine terms

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Fourier coefficients for sine terms Electrical engineering Learn about electricity, circuit theory, and introductory electronics. We also h…

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Electrical engineering: Fourier coefficients for cosine terms

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Fourier coefficients for cosine terms Electrical engineering Learn about electricity, circuit theory, and introductory electronics. We also…

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Electrical engineering: Finding Fourier coefficients for square wave

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Finding Fourier coefficients for a square wave Electrical engineering Learn about electricity, circuit theory, and introductory electronics…

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Accounting and Its Use in Business Decisions

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This is the first in a series of accounting courses that cover a wide range of topics. These will greatly increase your knowledge and under…

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Class 11 Physics (India): Harmonic motion part 2 (calculus)

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We test whether Acos(wt) can describe the motion of the mass on a spring by substituting into the differential equation F=-kx Class 11 Phys…

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Chemistry: Complete ionic and net ionic equations

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The difference between molecular equations, complete ionic equations and net ionic equations. How to identify spectator ions. Chemistry Did…

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Chemistry: Balancing chemical equations

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How to balance a chemical reaction by making sure you have the same number of atoms of each element on both sides. Chemistry Did you know t…