i need help answering these 2 questions.

4. Refer to the formulation of the absolute version of the real exchange rate. We noted that when the real exchange rate is equal to 1, PPP holds. What are the implications for the home currency's purchasing power when the real exchange rate is greater than 1? When it is less than 1? Explain carefully. 5. According to the text, relative PPP is expressed as the equality between the per- centage change in the exchange rate and the inflation differential. Prove that this relation indeed holds. (Hint: Refer to the discussion of IRPT for the steps to be taken in your proof.) 4. Refer to the formulation of the absolute version of the real exchange rate. We noted that when the real exchange rate is equal to 1, PPP holds. What are the implications for the home currency's purchasing power when the real exchange rate is greater than 1? When it is less than 1? Explain carefully. 5. According to the text, relative PPP is expressed as the equality between the per- centage change in the exchange rate and the inflation differential. Prove that this relation indeed holds. (Hint: Refer to the discussion of IRPT for the steps to be taken in your proof.)