35.Find the Fourier series for the following function: f(t) = {1 for 0

Repeat the previous exercise to find the formula forthe APY of an account that compounds daily. Usethe results from this and the previous exercise todevelop a function I(n)for the APY of any accountthat compounds n times per year.

This exercise shows another way to derive the formula for the derivative of the natural logarithm function using the definition of the derivative. a. Using the definition of the derivative, show that d(lnx)dx=limh0ln(1+hx)1h. b. Eliminate h from the result in part a using the substitution h=x/m to show that d(lnx)dx=limmln[(1+1m)m]1/x c. What property should the function g have that would yield limmg(h(m))=g(limmh(m))? Assuming that the natural logarithm has this property, and using the result about (1+1/m)m from Section 2.1, show that d(lnx)dx=lne1/x=1x.