h(1)=1E-2;
TRUEV=        ;  % you will need to complete this line
for i=2:15
  h(i)=h(i-1)/4;
  D=(atan(5+h(i))-atan(5))/h(i);
  error(i)=TRUEV-D;
end   
format long 
% try to remove the long format line to see the difference
h, error
% try to organize better the printout, so that the entries of
% h align with the entries of error

%hint: h=(5+h)-5, therefore D computes the slope
%of "something".


