Previous Years' Solved Question Papers: GATE General Aptitude and Engineering Mathematics, 2019 by Pearson About the Author Dr Nilam is Assistant Professor at the Department of Applied Mathematics, Delhi Technological University, Delhi. She obtained her Ph.D. degree from I.I.T. Roorkee. She has the teaching experience of more than 9 years to undergraduate and post graduate students. She has also worked as Lecturer in BITS Pilani for two years. She has published and reviewed a number of research papers in journals of international repute. Her research interest includes Mathematical Modeling and Simulation, Mathematical Biology and Agent-based modeling of Infectious diseases.