From: Claudia (for Teacher2Teacher Service)
Date: Apr 02, 2000 at 21:51:50
Subject: Re: Integration

The Leibniz text interprets the double integral geometrically in terms of
the volume of a three-dimensional solid, which utilizes the Riemann method,
but also takes it as an extension of the surface of the function f(x,y)and
looks at it by using parallel planes.

 -Claudia, for the Teacher2Teacher service