PLEASE SHOW ME HOW TO INPUT EQUATION USING TA BA II PLUS ON A CALCULATOR FOR THIS PROBLEM. I DO NOT KNOW WHAT BUTTONS TO PUSH TO GET THE ANSWERS.

In early 2012, the spot exchange rate between the Swiss Franc and U.S. dollar was 1.0404 ($ per franc). Interest rates in the United States and Switzerland were 0.25% and 0% per annum, respectively, with continuous compounding. The 3-month forward exchange rate was 1.0300 ($ per franc). What arbitrage strategy was possible? How does your answer change if the forward exchange rate is 1.0500 ($ per franc).