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The function is .
Find the value of .
Draw a table:
Consider different values of to find the corresponding values of .
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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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