We now demonstrate ways in which to graph exponential functions.
Example6
Graph and .
Solution
We can compute points for each equation using the key on a calculator. (See the following table.) Then we plot these points and draw the graphs of the functions.
x
−2
0.135
7.389
−1
0.368
2.718
0
1
1
1
2.718
0.368
2
7.389
0.135
Note that the graphs are reflections of each other across the y-axis.
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key on a calculator. (See the following table.) Then we plot these points and draw the graphs of the functions.