i'm using casio 992SVPAM model since college days....but most calculator nowadays can calculate not only matrices or complex numbers but can calculate the roots up to 3rd degree
anyone who could help me regarding the specification of xlpe...can anyone nominate a good brand of cable with rating 7.2KV, 60mm2. i'm gonna use the said cable for our expansion of our local substation. acutally the line is rated at 6.6KV.