k=1,2,....6 are enough to reach error<0.001
Use the inequalities S_{2m }<(or equal) s <(or equal) S_{2m-1}to calculate the infinite sum S= (summation goes to infinity and starts at k=1) (-1)^{k-1}1/k! within an error of at most .001
I really have no idea where to begin. So any help would be much appreciated. thanks