So I started with limits and everything went well, and then into derivatives, and a problem started. First I know how to find the derivative of basic things using like ( limit definition of derivative) or (rules for derivatives) or ( product rule/ quotient rule/ chain rule)..... My problem probably falls under the " Implicit Differentiation" category But the problem is when the derivative becomes more than just D/DX, it becomes like DY/DX, and the videos/textbooks tell me stuff like : derivative of something WITH RESPECT to something... And the equation has more than x like x+y = something... I am trying to get this concept into my head but it is not clicking! Especially those questions that leave d/dy attached to them... What is the derivative of x with respect to y ?? What is the derivative of y with respect to x ? Why is there "respect"?