Chapter A.1, Problem 24E

Solution

Use the information from the grapher screens below to evaluate the expressions.

  $4.41$ .

Given:

The given expression is $\sqrt{19.4481}$ .

  

Calculation:

The given expression is $\sqrt{19.4481}$ .

As from given graph $19.4481={4.41}^2$ .

  $\begin{array}{c}\sqrt{19.4481}=\sqrt{{(4.41)}^2}\\ ={\left({(4.41)}^2\right)}^{1/2}\\ ={4.41}^{2\cdot \frac{1}{2}}\\ ={4.41}^{\frac{2}{2}}\\ ={4.41}^1\\ =4.41\end{array}$

Thus $\sqrt{19.4481}=4.41$