Work through the concepts below, then test yourself with the knowledge check.
A Riemann sum approximates the area under a curve using
The definite integral ∫[a,b] f(x) dx represents
As the number of rectangles n→∞ in a Riemann sum, the approximation becomes
∫[a,b] c dx (constant function) =
If f(x) < 0 on [a,b], then ∫[a,b] f(x) dx is