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Browse Classroom Capsules and Notes

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An elementary proof for the generalized Schwarz inequality.

An alternative approach to the proof of Cramer's rule in linear algebra

A simple and clever way to compute the entry in the pascal triangle using numbers in any row above the row to which the desired entry belongs.

The authors discuss the evaluation of certain improper integrals by first transforming them.

The Golden Mean is found in electric circuit theory.
Cramer`s Rule is revisited.
The number of distinct bridge auctions is calculated.
A weighted arithmetic/geometric mean inequality is proved.

Elementary examples from college algebra illustrate the idea of involutions.

Elementary examples, specifically Pythagorean triangles, illustrate the idea of involutions.