Definite integration

It involve integration among specified limits, say a and b

The integral    is a definite integral whether the limits of integration are as: a and b

The integrals is evaluated as given below

1.         Calculate the indefinite integral ?f(x)dx. By supposing it is F(x) + c

2.         Attach the limits of integration

3.         Substitute b as the upper limit and then substitute a as the lower limit for x.

4.         Obtain the difference and the result is the numerical value for the definite integral.

By applying these steps to the definite integral, then