? From high school to college, most teachers always pray for good luck when seeking guidance.
? Over time, many people's instinctive intuition about y' disappeared.
? When learning the transformation derivative of complex variable function, implicit function and parametric equation, we will
? There are many difficulties, such as deriving the fourth and fifth derivatives of x to y,
? When the result must be represented by y', there are few survivors.
? (it is the derivative of x to y, not the derivative of y to x, only the first derivative.
They are mutual. Above the second order, it becomes more and more complicated)
? When learning the partial derivative relation, ordinary differential equation and partial differential equation of multivariate function,
? It's worse
2, dy, we call it differential; Dy/dx is called derivative.
? Differential and derivative are the differences between China's calculus and English only has differential.
? It's just that Americans use derivatives at a much higher frequency than differential.
3. Our differential concept is derivative multiplied by dx.
The detailed answer to this question is as follows. If you have any questions, please answer them.