I have no idea what to do here.

*Stevie consumes two goods. The expenditure function is given by:*

$$e(p_1,p_2,u) = \frac{up_1p_2}{p_1+p_2}$$

*a) Determine the direct utility function of Stevie*

*b) it is given that the Hicksian demand of Stevie for good 2 equals 4 if $$p_1 = 2 \mbox{ and } u = 25$$*

*Determine the value of $$p_2$$*

reinout-g Jun 21, 2014