SirsiDynix Enterprise http://kllibrary.dbkl.gov.my/client/en_US/pklsearchpage/pklsearchpage/qu$003dMathematics$002b$002b--$002b$002bFormulae$0026qf$003dPUBDATE$002509Publication$002bDate$0025091998$0025091998$0026ps$003d300? 2026-10-20T17:49:29Z