Suppose You Want to Use the Midpoint Rule with N $\int _ { 1 } ^ { 6 } e ^ { - x } d x$

Multiple Choice

Suppose you want to use the Midpoint Rule with n = 4 and equal-length subintervals to approximate $\int _ { 1 } ^ { 6 } e ^ { - x } d x$ ? What are the sample points you would use to compute the heights of the rectangles used in this approximation

A) $\{ 1,7 / 2,6 \}$
B) $\{ 1,13 / 8,23 / 8,33 / 8,43 / 8,6 \}$
C) $\{ 13 / 8,23 / 8,33 / 8,43 / 8 \}$
D) $\{ 9 / 4,19 / 4 \}$
E) $\{ 1,9 / 4,7 / 2,19 / 4,6 \}$