Question: A typical utility function is the logarithmic utility: Clearly this makes sense only for positive values of wealth. It is easy to check that, for

A typical utility function is the logarithmic utility:


u(x) = log(x).


Clearly this makes sense only for positive values of wealth. It is easy to check that, for the logarithmic utility, we have


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Hence, logarithmic utility has decreasing absolute risk aversion, but constant relative risk aversion.

u(x) = log(x).

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