Comments on the properties of the operational matrices of integration and differentiation for Fourier trigonometric functions

摘要

The properties of the operational matrices of integration, P, and differentiation Q, are discussed for the case of Fourier trigonometric functions. In particular, a theorem that establishes the relationship between the matrices P/sup -1/ and Q is given, and the meaning of using P/sup -1/ instead of Q, recently proposed in literature, is clarified.