Revise applying integral calculus Revise how to find the area above and below the x axis and the area between two curves by integrating, then evaluating from the limits of integration.

Applying integral calculus The area above and below the x axis and the area between two curves is found by integrating, then evaluating from the limits of integration.

Many of these difficulties concerned the integral calculus. In this paper, we deal with some topics relevant to understand Euler's conception of analysis and how he developed and implemented his ...