
To find: The given function is one to one function or not.

Answer to Problem 86RE
The given function isn’t one to one.
Explanation of Solution
Given function:
Calculation: Use graphing device to graph the function
Graph : Sketch the graph using graphing utility.
Step 1: Press WINDOW button to access the Window editor.
Step 2: Press
Step 3: Enter the expression
Step 4: Press GRAPH button to graph the function and adjust the windows according to the graph.
The graph is obtained as:
As we see that the graph is cutting the axis just one time. Therefore, the function is one to one function.
Hence, the function q(x) is one to one function.
Interpretation:
If some horizontal line intersects the graph of the function more than once, then the function is not one to one.
Chapter 2 Solutions
EBK PRECALCULUS: MATHEMATICS FOR CALCUL
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