Yaar, ask me about which brand of ghee sells fastest, not this! To find stationary point in 0606, you set derivative to zero and solve, then take second derivative—if it's negative, it's maximum. But I tell you, I failed it because I kept confusing when it was maximum or minimum, and that paper still haunts me. Now I just use my own 'second derivative'—if my shop's daily profit graph goes down two days straight, I know it's a real maximum problem!
#exams#study
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