Tools Window Help 0 B :)) os 00 ignment4_Instructions.pdf 1 of 2 Using an online code editor: @ 1. Write a method to calculate mathematical function. f(x,y) = x2 + y2 2. Write a method to calculate mathematical function. 1 Vn e-x/2 I 3. The monthly payment cof a mortgage of n months with monthly interest rater for a principal p is given by the mathematical formula. pr(1+r)" (1+r)" - 1 Write a method to calculate the monthly payment ls Window Help B Q nent4_instructions.pdf o C Q sourch 4. Write a method print3(String s) to print a string three times in three lines with increasing indentation. For example, print3("Hello"); will print Hello Hello Hello 5. Lets be a string of odd length. Write a method remove(String s) to return a substring of s with the center character removed. For example, remove("Program") will return the string "Proram". 1 I 6. A string variable fullName represents a full name such as "Doe, John". Write a method shortName(String fullName) to return a string of first initial and last name, e.g., "). Doe