Proper Integrals
An integral is considered proper if the integrand is bounded over a finite interval (a, b).

In particular, two conditions must be satisfied for an integral to be classified as proper:
- The integrand is bounded - that is, the function attains a maximum value M and a minimum value m within the interval of integration.
- The interval of integration is finite - both the lower and upper limits are real, finite numbers.
If either of these conditions is not met, the integral is referred to as an improper integral.
And so on.
