### Home > APCALC > Chapter 5 > Lesson 5.5.1 > Problem5-157

5-157.

Construct a $50$-term right-hand Riemann sum to estimate the area of the region bounded by the $x$-axis, the function $f ( x ) = \frac { 1 } { 2 ^ { x - 1 } }$, and the lines $x = 1$ and $x = 5$. Give your answer both numerically and using summation notation.

General form of a right endpoint Riemann sum:

$\displaystyle\sum_{i=1}^{n}\Delta xf(a+\Delta xi)$