考研高等数学试题中有关应用性问题的分析

--,,,,,,1914p1p2q1q2q1240.2p1q2100.05p2C3540q1q2.=---:;,2031.kk0amr0r0(1)3(2)m(1)nxnnWn(n=1,2,3)xkx,,,,;;,30419000kg700km/hk6.0106kgkm/h/m=9000kgv0700km/h.tx(t)v(t)40840.963/40.880202..--3SGISGPSRS19861998CookeBMGarethJonesDKayeBTheEpidemiologyofPlantDiseases(secondedition)10PPT[7]256