Math question: What is the derivative of f(x) = sin(2x) + 3x^2 - ln(x) - e^x, where sin(x) represents the sine function, ln(x) represents the natural logarithm, and e represents Euler's number?
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Math question: Find the vertex, axis of symmetry, and y-intercept of the quadratic function f(x) = -2x^2 + 5x - 3.
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What is the unit vector component of vector V = 3i + 4j in the direction of the x-axis?