84/1000, infinity minus infinity, calculus 1 limit

68/1000, midpoint rule approximation for the integral of sqrt(1+x^3) from 0 to 2

86/1000, the small-angle approximation, sinθ≈θ

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63/1000, limit of x^x as x goes to 0+, calculus 1

85/1000, why is the integral of 1/x = ln(x)+C?

71/1000, limits from a graph