for
part of
discrepancy
and
Partial derivative) introduced the concept of partial derivative in the works of Newton, Leibniz and others, but there is no unified special symbol. 1755, used by Euler.
express
about
This symbol has a wide range of applications, but when it has a power exponent, it is no different from the general derivative, such as
this means
The square at rest means
What about the square of? Euler was then used again in 1776.
Right of expression
about
Partial derivatives of order. 1770 years, respectively, used by gaspard monge.
and
Show to the right
and
Partial derivative of; Used in condorcet 1770.
express
about
Partial differential, using
express
correct
Partial derivative of. Another place, he also used it.
Represents the total differential sum.
Represents partial differential. The most notable is Lagrange's work, which is used in 1786.
The partial derivative is pronounced as rounded, and he uses
express
correct
This is a modern symbol of partial derivative, but this symbol was not used immediately, until Youbi emphasized this symbol again in 184 1 and introduced d to represent total differential.
Represents partial differential. suppose
be
and
Function of total differential.
This symbol will be widely used in the future.