The discussion focuses on applying the cylindrical shell method to the curves defined by y=x^2 and y^2=x, specifically when revolving around the line x=-1. Participants emphasize the need for clarity in the question and request the poster to provide specific details and initial attempts at solving the problem. Graphing the functions is also mentioned as a crucial step in visualizing the problem. The conversation highlights the importance of clearly stating the problem to receive effective assistance. Overall, understanding the cylindrical shell method in this context requires both a mathematical approach and graphical representation.
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ithan
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How to solve this problem and how to graph it? Please help...
Question: A clock's minute hand has length 4 and its hour hand has length 3. What is the distance between the tips at the moment when it is increasing most rapidly?(Putnam Exam Question)
Answer: Making assumption that both the hands moves at constant angular velocities, the answer is ## \sqrt{7} .## But don't you think this assumption is somewhat doubtful and wrong?