Chapter 11.6B, Problem 2GCE

To determine

To find number that the calculator displayed and how this number is related to the area found in Exercise 1.

Answer to Problem 2GCE

  $1\text{ square unit}$

Explanation of Solution

Given:

Use $x=2$ as the lower boundary and $x=4$ as the upper boundary.

Calculation:

The following is the shaded region bounded by the lines-

Press 2^nd [QUIT] to go to the home screen. Then press 2^nd [ANS] ENTER

The calculator displayed the area as $1\text{ square unit}$

It is visible from the graph the graph that the shape bounded by the given lines is rectangle-

So its area is-

  $\begin{array}{l}l\times b\\ =(4-2)\times (0.5-0)\\ =2\times 0.5\\ =1\text{ square unit}\end{array}$