7.4.pdf - Section 7.4 Partial Fractions 3x − 2 dx � x 2...

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Section 7.4 : Partial Fractions
3 2 ( 2)( 1) x dx x x + Partial Fractions ( 1) ( 2) 3 2 x x x A B + + = 2 1 A B dx x x = + + 3 2 ( 1) ( 2) ( 2)( 1) ( 2)( 1) x x A x x x B x x + + = + + 3 A B + = ( ) 2 3 2 x x A B A B + + = 2 2 A B + =− 3 1 B = 1 3 B = 3 3 1 A + = 8 3 A =