The partial derivative of a function f (x, y, ...) with respect to the variable x is variously denoted by.Since in general a partial derivative is a function of the same arguments as was the original function, this functional dependence is sometimes explicitly included in the notation, as in.he cross partial derivative with respect to x and y is obtained by taking the partial derivative of f with respect to x, and then taking the partial derivative of the result with respect to y, to obtain.
Considering mountains with a topographic prominence of at least 300 m (980 ft), the Matterhorn is the sixth-highest summit in the Alps and Europe outside the Caucasus Mountains. It is also the fifth-highest summit of both Valais and Switzerland and the third highest summit of both the Aosta Valley and Italy.
The above list was compiled by Jeff Howbert in 1996 for an article in Pack and Paddle. The list uses a 500 foot clean prominence rule for each peak (this excludes even named peaks such as Matterhorn which only has 306 feet of clean prominence). See the link to his site below for the article, list, and a map that shows the general location of all the summits.