The integral of the absolute value of x is expressed as ∫ |x| dx = (x|x|)/2 + C. This formula applies for all real values of x. The discussion references the Wolfram Research Functions website as a source for this information. The integral effectively captures the behavior of the absolute value function across its domain. Understanding this integral is essential for solving various mathematical problems involving absolute values.
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?