图书介绍：片断：Finite-DifferenceEquations1.1AMYTHICALFIELDImaginethatagraduatestudentgoestoameadowonthefirstdayofMay，walksthroughthemeadowwavingaflynet，andcountsthenumberoffliescaughtinthenet.Sherepeatsthisritualforseveralyears，followingupontheworkofpreviousgraduatestudents.TheresultingmeasurementsmightlooklikethegraphshowninFigure1.1.Thegraduatestudentnotesthevariabilityinhermeasurementsandwantstofindoutiftheycontainanyimportantbiologicalinformation.Severaldifferentapproachescouldbetakentostudythedata.Thes