Local minimum, local maximum, saddle point, and inconclusive cases — IITM BS previous year questions

Local minimum, local maximum, saddle point, and inconclusive cases is part of Local Extrema for f(x, y), Week 11 in Mathematics 2. Prasnya files every IIT Madras BS previous year question from this subtopic here, each one with a worked explanation. Take the whole set as a timed mock and you get accuracy, pacing and per-question analysis back.