p be the normal pressure against the interior of the vessel, and the vessel is not common in elementary works on be enlarged an elementary amount, dv, then will an element of the external work the calculus, but is frequently used in higher works. The d above the bar ex- be tends its power of… … where the parenthesis might be retained to indicate that the second differential is not made in reference to the same varia- ble as the first, but this is unusual and unnecessary. Substituting the last equa- tion in the general one, we have When the external work is not a func- tion of x and y,…
Engineering
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
![An illustration from Works. Popular edition.] 2 series (1886)](https://img.insideoutlibrary.com/img/200/bl-bl_003191336_9-272-1.webp)
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer02inte-241-125.webp)
