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Browse Classroom Capsules and Notes

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Displaying 971 - 980 of 1135

A new approach to finding the center of gravity for quadrilaterals

A number game and the discussion of probabilities of winning
A Direct Proof That Row Rank Equals Column Rank

A new and elementary proof for a theorem in differential equations

Use area to describe the second derivative of a function
The author explores the relationship between saddle points of surfaces and the inflection points of the projected curves.

Analytic proofs for the generation of conic sections

Descriptions of the behavior of a family of functions

The author presents a simple proof of a special case of Dirichlet`s celebrated theorem on primes in arithmetic progressions.

An arctangent identity is presented visually.

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