This exercise explores how, in a mixed-strategy equilibrium, players must put positive probability only on best responses. Consider the game in the following figure.
![1559_Figure 5.jpg](https://secure.tutorsglobe.com/CMSImages/1559_Figure%205.jpg)
Compute the pure-strategy and mixed-strategy Nash equilibria for this game, and note how they depend on x. In particular, what is the difference between x > 1 and x.