%0 Journal Article %T A Feedback System Dynamic Response Analysis by Root-Locus Method Using Excel Spreadsheet and XNumbers Add-In Package %A Mirapalheta, Gustavo C. %A Penedo, Sergio R. M. %A Justo, João F. %J International Journal of Electrical Engineering Education %V 50 %N 1 %P 69-79 %@ 0020-7209 %D 2013-01-01 %I SAGE Publications %~ DeepDyve