  
Illustration from Newton's Principia for his
proof that (in modern notation)  for a monotonic function f defined
on an interval [A,E] the difference between  the
upper and lower sums with n equal subdivisions 
is equal in absolute value  to
|(f(E)-f(A))(E-A)/n|
(and therefore goes to 0 as n goes to infinity). Here n=4.
Back to MAT 127 
  |   
 |