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

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*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.*

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

*Two proofs, one elementary, of the limit in the title are presented.*

*The authors investigate the occurrence of composite values of non-constant polynomials with integer coefficients evaluated at integer points.*

*A visual proof for the sum of octagonal numbers is presented.*

*The author shows that the ratio of the area under a catenary curve to the arc length is independent of the interval over which they are measured.*