yourMATHsolver: IB students

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Polarization identity

In mathematics, the polarization identity is any one of a family of formulas that express the inner product of two vectors in terms of ...
Law of total variance

In probability theory, the law of total variance or variance decomposition formula, also known by the acronym EVVE (or Eve's law ...
The Gaussian Integral

The Gaussian integral , also known as the Euler–Poisson integral is the integral of the Gaussian function e − x 2 over the entire re...
Pigeonhole Principle

In mathematics and computer science, the pigeonhole principle states that if n items are put into m pigeonholes with n > m , ...

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