5. Let f be the function with initial condition f(0)=0 and derivative defined by f'(x) = the first three nonzero terms and the general term for the Maclaurin series for f. (x). Wr = cos (2x). Write 6. Find the third degree Taylor Polynomial for the function f(x) = 2x-3 about x=1. 3 2n+1 7. If the series =1(-1)" is approximated by the partial sum with 20 terms, what is the alternating series error bound?