The rate of change of a function occurring as a limit approaches zero is called

The rate of change of function occurring as limit approaches zero is called as Derivative.

Step-by-step explanation:

Given:

The rate of change of function occurring as limit approaches zero

Solution:

Consider, rate of change using limits is give by,

f' (a) = limit[ f (t) - f (a) / (t-a) ] as t tends to zero.

and it not possible to calculate t that last for zero seconds.

So this concept of Instantaneous rate of change and limit approaches zero is called as Derivative.