## Instantaneous Rate of Change at x=a

### The instantaneous rate of change at a specific point a in a function represents the rate at which the function is changing at that particular point

The instantaneous rate of change at a specific point a in a function represents the rate at which the function is changing at that particular point. To find the instantaneous rate of change at x=a, you can use the concept of the derivative.

The derivative of a function f(x) at a specific point x=a is denoted as f'(a) or dy/dx |x=a. This derivative gives you the instantaneous rate of change of the function at x=a.

To find the instantaneous rate of change at x=a, you first need to find the derivative of the function. This is typically done using differentiation rules, such as the power rule, product rule, quotient rule, or chain rule, depending on the complexity of the function.

Let’s say we have a function f(x), and we want to find the instantaneous rate of change at x=a. Follow these steps:

1. Find the derivative of the function f(x) with respect to x. This will give you the derivative function f'(x).

2. Substitute x=a into the derivative function f'(x), that is, evaluate f'(x) at x=a.

f'(a) = f'(x) |x=a

3. Simplify the expression if possible. This will give you the instantaneous rate of change at x=a.

f'(a) represents the rate of change of the function f(x) at the point x=a.

It’s important to note that the instantaneous rate of change can be positive (the function is increasing), negative (the function is decreasing), or zero (the function is neither increasing nor decreasing) depending on the behavior of the function at x=a.

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