Question 1125603
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I don't know what "the ‘procedural perspective’ discussed in Example 6.1.5" is....<br>
Two other tutors have given you good responses showing how you can find the inverse of a function by switching the x and y and solving for the new y.  But that might not be what you were looking for.<br>
The "procedural perspective" suggests to me that you might have been looking for something like the following.<br>
An inverse function "gets you back where you started."  For relatively simple functions, that means performing the opposite operations and in the opposite order.<br>
So look at what the given function does with its input.  (To help with this part of the analysis, think of the order of operations you would do to evaluate the function for a given input.)<br>
(1) multiply by 10; then
(2) subtract 20; then
(3) take logarithm base 2<br>
The inverse function does the opposite operations, in the opposite order:<br>
(1) raise 2 to the given power  (the function at this point is {{{2^x}}}); then
(2) add 20  (the function is now {{{2^x+20}}}; and last
(3) divide by 10<br>
The inverse function is<br>
{{{(2^x+20)/10}}}