Illustration Graph of a shifted Dirac delta function (1d)

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Sketched one-dimensional Dirac delta function \( \delta(x-c) \) shifted to the point \( x = c \). The area enclosed by the Dirac delta function is 1. The delta function is infinitely narrow and infinitely high.

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Illustration Graph of a shifted Dirac delta function (1d)

Kronecker Delta: 4 Important Rules and Scalar Product in Index Notation

Levi-Civita Symbol and How to Write Cross Product with it

Fourier Series (+ Coefficients) and How to Intuitively Understand it

Differential Equations (DEQ): All the Basics Everyone Should Know

Separation of Variables (SoV) and How to Solve Homogeneous DEQ's of 1st Order

Variation of Constants and How to Solve Inhomogeneous Differential Equations of 1st Order

Exponential Ansatz and How to Solve Linear Differential Equations (of 2nd order)

Separation of Variables and How to Solve Partial Differential Equations

Nabla Operator and its 3 Most Important Applications

Gradient and How to Calculate the Directional Derivative