Math question: Find the seventh-order derivative of f(x) = 2x^4 - 5x^3 + 3x^2 - 7x + 1.
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Math question: What is the result of dividing 2/3 by 1/4? (
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Math Question: Consider the two-variable inequality system: 2x - 3y ≤ 6 and x + 4y > 10. Graph the solution in the xy-plane. How many integral points lie in the shaded region?