Approximating Areas with Riemann Sums

This study guide covers Riemann sums for approximating areas under curves. It explains four types: left, right, midpoint, and trapezoidal sums. The guide discusses how to calculate these sums graphically and numerically, including examples with solutions. It also covers overestimation/underestimation based on function behavior (increasing/decreasing and concavity), subdivisions, and notation.