Graph the given function. HINT [See Example 2.]
Example 2:
a. Sketch the graph of f (x) = log2 x by hand.
b. Use technology to compare the graph in part (a) with the graphs of logb x for b = 1/4, 1/2, and 4.
Solutions
Graphing these points and joining them by a smooth curve gives us Figure 14
b. We enter the logarithmic functions in graphing utilities as follows (note the use of the change-of-base formula in the TI-83/84 Plus version):
Figure 15 shows the resulting graphs.
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