**TI83** Program file 01/16/07, 11:10| mEULERmk—?Þ*INITIAL)X*?ÜX?Þ*INITIAL)Y*?ÜY?Þ*STEPSIZE*?ÜH?Ö1?0C?Ö2?XpHU?Yp^‚HV?œX+Y+U+V?UX?VY?ÚC+20?×2?Ø?×1?£%