ahhh t as saintnsl Create a user-defined fn LastName. FirstName,-toik mean g is calculates the geometric mean of a numbers. The geometric a special average [measure of central tendencyl of the product of x nth root defined as the Input to the user-defined function are the number of numbers n and their values, x X x...x This calculation can be used in investment calculations [engineering economics] to find the AVERAGE RATE OF RETURN for an investment. Create a calling program which finds the average rate of return for the 4 simple interest rates of 5%, 10%, 7%, 2%. You may or may not choose to have the user input these values. Express your result as a percentage rate with 2 decimals [Space provided for your work] The previous required problems are worth 100 points. 71Page