Math question: Find the 4th higher-order derivative of f(x) = 2x^3 + 5x^2 - 3x + 1.
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What is the period of the function f(x) = 3sin(4x) in radians?
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What is the resultant displacement when a vector of magnitude 35 units is added to a vector of magnitude 27 units at an angle of 60 degrees between them?