InterviewSolution
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Evaluate:`int((x-1)(x-2)(x-3))/((x-4)(x-5)(x-6))dx` |
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Answer» `int(overset(underset(darr)("Improper fraction"))((x-1))(x-2)(x-3))/((x-4)(x-5)(x-6))dx` `int[1+((x-1)(x-2)overset(underset(darr)("Proper fraction"))((x-3))-(x-4)(x-5)(x-6))/((x-4)(x-5)(x-6))]dx` ` " " `(Adding and subtracting 1) `=int[1+(3xx2xx1)/((x-4)(-1)(-2))+(4xx3xx2)/(1(x-5)(-1))+(5xx4xx3)/((2)(1)(x-6))]dx` `=1+3log|x-4|-24 log|x-5|+30 log|x-6|+C` |
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