Current location - Training Enrollment Network - Mathematics courses - I don't understand the basis for the derivation of parametric equations in advanced mathematics. See question 1, what is dy, dx and dt? How did dt come from? Urgent, the exam is coming soon. .
I don't understand the basis for the derivation of parametric equations in advanced mathematics. See question 1, what is dy, dx and dt? How did dt come from? Urgent, the exam is coming soon. .
Because it is impossible to find the derivative of y to x directly (both y and x are functions of t), the differential of parameters t and t is introduced.
Dt is an infinitesimal quantity about t.
The denominator of the numerator is divided by dt, and Dy/dx is:
(dy/dt)/dx/dt
That is, the numerator is the derivative of y to t, and the denominator is the derivative of x to t.