Our main author, Prof. Lalji Prasad has a teaching experience of more than 40 years. He is one of the most prominent author of Mathematics text book. He started his text book writing career in 1952, and has continued ever since. In 1950, after post graduation in Mathematics, he was appointed as a lecturer in Mathematics at B.N College, Patna University. Soon he was promoted to the position of professor in the same university.
To pursue an advanced study in Mathematics and Statistics in 1958, he moved to Imperial College of Science and Technology, London University for degrees in D.I.C and M.Sc. After his return to India, he conducted his research work and obtained Ph. D from Patna University. He then taught graduate and postgraduate students for a span of 40 years. Presently, Prof. Lalji Prasad is actively involved in writing books to provide superior educational material to the teaching community.
Our author, Dr. Keshava Prasad Singh has a brilliant academic career! He has been a former University Professor & HOD of English in B.N. College Patna. He was the ex-member of Bihar Service Public Commission and former Vice-Chancellor of B.N. Mandal University. K.P. Singh has over forty years of experience in teaching. After his retirement from Patna University in 2003, he taught English Grammar as a guest teacher in Dept. of Functional English, B.N. College of which he was a founder head.