1. Solve the utility maximisation problem and find the Walrasian demand constant elasticity of substitution utlility function:

   u(x1,x2)=[x1^()+x2^()]^(1/)given prices of the consumption goods p1 and p2 as well as consumer income I.

2. Find the consumer price index (price of aggregate consumption) when consumer utility function is:

   U(x1,x2) = x1^()x2^(1-)