We still encourage orders placed online, by phone at 406-587-0166, or by email at staff@countrybookshelf.com, and contactless pick up and in-town delivery options are still available. Please wear a mask for in-store shopping and pick up.
Help us get books to kids in our community! Donate Here
This text illustrates the fundamental simplicity of the properties of orthogonal functions and their developments in related series. Begins with a definition and explanation of the elements of Fourier series, and examines Legendre polynomials and Bessel functions. Also includes Pearson frequency functions and chapters on orthogonal, Jacobi, Hermite, and Laguerre polynomials, more. 1941 edition.
