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Browse Classroom Capsules and Notes

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Using geometry to find the derivatives of inverse trigonometric functions

An alternative way of finding the equation of the circle.

The author uses combinatorics to find the number of rankings of tennis players that are consistent with the tree representing a given tournament.

Example to clarify concept of alternating series.

A different way to find the product rule

The author characterizes and counts the number of the many row-reduced echelon forms associated with the set of all \(m \times n\) matrices.

A different way to find a usual limit

Use trigonometry inequality to show a geometric fact.

An alternative criterion to determine if a number is irrational