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Browse Classroom Capsules and Notes

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Displaying 1101 - 1110 of 1209

The author describes two methods that Fibonacci might have used to find an approximate solution to a cubic equation posed in the court of the Holy Roman Emperor, Fredrick II in 1225.
Without using double integrals, a new method is presented to evaluate the two Fresnel integrals about sine and cosine that has a wider applications than previous methods.
Two conjectures on summations involving binomial coefficients are proved as a consequence of a more general combinatorial identity.
The author introduces two methods of solving linear equations used by ancient Egyptians and Chinese that is also related to Cramer's rule.
The derivative of arctangent is derived directly from the definition of derivative by using some clever inequalities.

The author shows how to solve a class of analytic functions using an approach demonstrating a surprising connection between multivariable calculus and linear algebra.

The author discusses several conditions that guarantee the correlation of the union of two bivariate data sets is greater than common correlation of the two data sets.
The authors show that a certain sequence unexpectedly converges to 8.

In this paper the radix sorting algorithm is used to explain why Geronne`s 3 pile card trick works. Generalizations are explored.

The limit of the ratio of the geometric mean to the arithmetic mean of certain sequences is studied, using Riemann sums.

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