To find: The given function is one to one function or not.
The given function isn’t one to one.
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 button.
Step 3: Enter the expression which is required to graph.
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.
If some horizontal line intersects the graph of the function more than once, then the function is not one to one.
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