13: Since we cannot guess the graph of a ratio of two known functions, we have to first write the given function in a different way. The obvious idea is to "move" the exponential into the numerator.

The basic function is g(x) = 1/x. In order to fix its argument one has to do these transformations in the following order.

Apply appropriate transformations to the graph of g in order to obtain h. Then identify transformations applied to value that turn h into f.

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