please answer in vba

Write VBA functions to calculate e using the Maclaurin exponential series, and compare the values for e from your program to those given by the Excel spreadsheet function and the VBA built-in function. The Maclaurin exponential function is given by: 72 2! 3! where T, rn! a. Write a VBA function, Tr (n, x), to calculate the value of an individual term in the exponential series as a function of n and x. Note: VBA does not have a factorial function, but you can borrow Excel's factorial function using WorksheetFunction. Fact: for example, nFactWorksheetFunction. Fact (n) just wrote a VBA function Function nFact (x,n), then used nFact (n) in the rest of my programs Write a VBA function, MacExp (x,tol), that converges the Maclaurin cosine series to a user selected tolerance tol, where the error should be less than the tolerance, as defined by the expression b. tol