I am way over my head in the area but the basic problem is how to compute a Elliptic integral of the second kind with a complex argument? E(w|m) = ? where w = u + iv. Ab.&Stegun mentions the case for E(phi+i chi\ alpha) but this notation game with the ellipticals is giving me a severe migraine. 17.4.12, p. 593. Many thanks.

This functionality is built-in Mathematica -- and to arbitrary precision, if required. Cheers, Paul -- Paul Abbott Phone: +61 8 9380 2734 School of Physics, M013 Fax: +61 8 9380 1014 The University of Western Australia (CRICOS Provider No 00126G) 35 Stirling Highway Crawley WA 6009 mailto AUSTRALIA http://physics.uwa.edu.au/~paul