Topics include conic sections, parametric equations and polar equations. Multiple representations, transformations, data analysis techniques and interconnections among geometry, probability and ...

R. W. Wagner, Equations and Loci in Polar Coördinates, The American Mathematical Monthly, Vol. 55, No. 6 (Jun. - Jul., 1948), pp. 360-363 ...

In this paper, fourth-order compact finite difference schemes are proposed for solving Helmholtz equation with piecewise wave numbers in polar coordinates with axis-symmetric and in some cases that ...