PAGE: 570 SET: Exercises PROBLEM: 1

The function is .

Find the value of .

Draw a table:

Consider different values of to find the corresponding values of .

Graph:

Graph the function and plot the coordinates.

Observe the graph:

The graph crosses the axis at ,so the -intercept is .

The domain is all real numbers, and the range is all real numbers greater than zero.

Use the graph to approximate the value of .

The graph represents all real values of for .

When ,the value of is about .

Use a calculator to confirm this value: .

Graph of the function is

The -intercept is .

The domain is all real numbers and the range is all real numbers greater than zero.

The value of is .

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