Keywords: Rational Elliptic Functions (n=1,2,3,4, x=--1,1-).svg rational elliptic function R<sub>n</sub> x on the interval ˆ’1 1 for different degrees n is the selectivity factor and is 1 1 in this graph own Inductiveload 2009-01-29 Mathematica Code <pre><nowiki> xp2xi_ Module g num den g Sqrt4 xi 2 + 4 xi 2 xi 2 - 1 2/3 ; num 2 xi 2 Sqrtg; den Sqrt8 xi 2 xi 2 + 1 + 12 g xi 2 - g 3 - Sqrtg 3; num/den ; xz2xi_ xi 2/xp2xi; txi_ Sqrt1 - 1/xi 2; Use the particular forms for these low-order REFs r1xi_ x_ x; r2xi_ x_ txi + 1 x 2 - 1 / txi - 1 x 2 + 1 ; r3xi_ x_ x 1 - xp2xi x 2 - xz2xi / 1 - xz2xi x 2 - xp2xi ; r4xi_ x_ Module num den num 1 + txi 1 + Sqrttxi 2 x 4 - 2 1 + txi 1 + Sqrttxi x 2 + 1; den 1 + txi 1 - Sqrttxi 2 x 4 - 2 1 + txi 1 - Sqrttxi x 2 + 1; num/den ; Plot xi 1 1; r1xi x r2xi x r3xi x r4xi x x -1 1 </nowiki></pre> Rational functions XY plots Special functions |