Is derivative the instantaneous rate of change Just learning derivative, it's a bit abstract for me, I can't help but be grateful!

Is derivative the instantaneous rate of change Just learning derivative, it's a bit abstract for me, I can't help but be grateful!

For example, f (x) = x ^ 2 + 5, when x changes, f (x) also changes. Let's set the change quantity as H. that is to say, when x changes to x + H, f (x) becomes f (x + H). Then the increment of X is h, f