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Integrate 5x sin3x.(a) –\(\frac{5}{3} \,x \,cos3x+\frac{5}{9} tan3x+C\)(b) \(\frac{5}{3} \,cos3x-\frac{5}{9} \,sin3x+C\)(c) \(x cos3x+\frac{5}{9} \,sin3x+C\)(d) –\(\frac{5}{3} \,x \,cos3x+\frac{5}{9} \,sin3x+C\)I got this question in an internship interview.The question is from Integration by Parts in portion Integrals of Mathematics – Class 12 |
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Answer» Right answer is (d) –\(\frac{5}{3} \,x \,cos3x+\frac{5}{9} \,sin3x+C\) |
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