Hi everyone!

In Multivariable calculus we say for integration that.

Derivative --> is rate of change

Anti-Derivative(integral) --> Area Under the graph

Now

Integral is opposite of derivative

So

I need a practical example in which if we reverse the rate of change we get area?

for eg

iF plane is flying and if we take rate of change of flight then how to reverse it and get area?

I am not getting it!

PLEASE HELP.