; TeX output 1997.02.17:1458y?MK`y cmr10This/doGcumentshowsanexampleoftheuseofthe': cmti10sub}'eqnarrayenvironment. >HereUUisone:W b> cmmi10xf=x~The< rstequationisnumbGer<1a,Athelastis1c.iTheequationasawholecanbe >referredUUtoasequation1.MT*oFshowthatequationnumbGersbehaveFnormally*,Ahere'sane}'qnarrayòenvi->ronment.Wxf=x~ cmmi10K`y cmr10