# Browse Classroom Capsules and Notes

You can filter the list below by selecting a subject category from the drop-down list below, for example by selecting 'One-Variable Calculus'. Then click the 'APPLY' button directly, or select a subcategory to further refine your results.

Displaying 1051 - 1060 of 1212

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 Dirichlets celebrated theorem on primes in arithmetic progressions.

An arctangent identity is presented visually.

Bernoullis inequality is presented visually.

For what positive number $x$ is the $x$-th root of $x$ the greatest?

A visual proof of the ordering of the means in the title is presented.