7.8 Improper Integrals - 7.8 Improper Integrals Definition The definite integral f x)dx is called an improper integral if a b(a At least one of the

# 7.8 Improper Integrals - 7.8 Improper Integrals Definition...

• Notes
• nizhes
• 9

This preview shows page 1 - 4 out of 9 pages.

7.8 Improper Integrals Definition: The definite integral is called an improper integral if (a) At least one of the limits of integration is infinite, or (b) The integrand f ( x ) has one or more points of discontinuity on the interval [ a , b ]. b a dx x f ) (
Infinite Limits of Integration 1. If f is continuous on the interval , then 1. If f is continuous on the interval , then 1. If f is continuous on the interval , then ) , [ a In each case, if the limit exists, then the improper integral is said to converge ; otherwise, the improper integral diverges . In the third case, the improper integral on the left diverges if either of the improper integrals on the right diverges. ) , ( -∞ ] , ( b -∞ = a b a b dx x f dx x f ) ( lim ) ( - -∞ = b b a a dx x f dx x f ) ( lim ) ( - - + = c c dx x f dx x f dx x f ) ( ) ( ) ( where c is any real number
Discontinuous Integrand 1. If f is continuous on the interval and has an infinite discontinuity at b , then 1. If f is continuous on the interval and has an infinite discontinuity at a, then 1. If f is continuous on the interval