Math question: What theorem states that if a function is continuous on a closed interval [a, b] and F(x) is an antiderivative of f(x) on [a, b], then ∫[a, b] f(x) dx = F(b) - F(a)?
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What is the product of the complex numbers (3+4i) and (-2-7i)?
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What are the three rules for congruence of triangles?