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Numerical Algorithms

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Gaussian Elimination

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Use case: Solving system of linear equations. Example: Determining variables in

[1326][xy]=[612]\begin{bmatrix}1 & 3\\ 2 & 6 \end{bmatrix}\begin{bmatrix}x\\ y\end{bmatrix} = \begin{bmatrix}6\\ 12\end{bmatrix}

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Newton-Raphson Method

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Use case: Finding better approximations of the roots of real-valued functions. Example: Refining the zero of x22x^2 - 2 starting with a guess of 1.

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Gradient Descent

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Use case: Finding the local minimum of differentiable functions, common in machine learning. Example: Minimizing cost functions like Mean Squared Error in linear regression.

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Simplex Method

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Use case: Solving linear optimization problems in operations research. Example: Maximizing profit P=40x+30yP = 40x + 30y subject to constraints.

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Monte Carlo Simulation

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Use case: Evaluating the impact of risk and uncertainty in prediction and forecasting models. Example: Estimating the value of (π)\\(\pi\\) by simulating random points in a square and counting those in a quarter circle.

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Fourier Transform

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Use case: Signal processing to decompose a function into its constituent frequencies. Example: Filtering noise from a signal by transforming, modifying, and performing an inverse transform.

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Bisection Method

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Use case: Finding roots of polynomials. Example: Solving x3x2=0x^3 - x - 2 = 0 for real root.

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