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10 cards from this deck
An approximation of area under a curve over an interval.
Width is Δx=b−an\Delta x = \frac{b - a}{n}Δx=nb−a.
It equals the value of the definite integral.
It's the left endpoint of each subinterval.
To estimate the area under a curve using trapezoids.
Using midpoints of subintervals to find function values.
The function is f(x)=x2f(x) = x^2f(x)=x2 over [0,1][0, 1][0,1].
It represents the exact area under a curve between points.
The result is 13\frac{1}{3}31.
It's foundational for understanding definite integration.
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