A.J. VAN DER POORTEN, A NOTE ON HADAMARD ROOTS OF RATIONAL FUNCTIONS, The Rocky Mountain Journal of Mathematics, Vol. 26, No. 3 (SUMMER 1996), pp. 1183-1197 ...

Revise how to recognise and determine the equation of a quadratic function from its graph. BBC Bitesize Scotland revision for SQA National 5 Maths.

Extending a result of Khavinson and $\acute {S}wi\cedil {a}tek$ (2003) we show that the rational harmonic function $\overline {r (z)} - z$, where r (z) is a rational function of degree n > 1, has no ...