# quasi-linear utility

## Definition

### Economics

- A utility function of the form
*U*(*x*_{0},*x*_{1},...,*x*_{n}) =*x*_{0}+**S**_{i}*u*^{i}(*x*_{i}), where*u*^{i}(×) are strictly concave functions. This is useful for generating demand functions for goods*x*_{i}that depend only on their own prices in terms of the numeraire*x*_{0}.