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17.1 4y? - 7y - 12 -dy Ji y(y + 2) (y - 3) Answer 27 In 2 5 8. 9 In 3 (or In 5 5
21. 2 +4 dx x2 + 4 Answer 1 2 ln(x2 + 4) + 2 '(x/2) + C 2 x2