Riemann Sums
Compare upper and lower Riemann sums and their definite integral limits.
Either use the default function or enter a function of your choice.
Alternatively, drag the existing curve to a new position on the x-y plane.
Shift and click-scroll to zoom in and out.
Shift and click-drag to pan left/right/up/down.
Shift and click-drag on axis to rescale axis.
Drag points A and B along x-axis to adjust interval.
Check boxes for calculation methods to use.
Observe the effect of increasing the number n of sub-intervals