Math question:Find the 3rd derivative of f(x) = sin(2x) - ln(x^2) at x = π/4.
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What is the integral of x^2 dx, where x denotes the variable and ^ denotes exponentiation?
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Math question: In a right triangle, if the measure of one acute angle is 35°, and the hypotenuse has a length of 10 units, find the length of the side opposite to the 35° angle.