Answer Happy

a) –\(\frac{5}{3} \,x \,cos⁡3x+\frac{5}{9} tan⁡3x+C\)
b) \(\frac{5}{3} \,cos⁡3x-\frac{5}{9} \,sin⁡3x+C\)
c) \(x cos⁡3x+\frac{5}{9} \,sin⁡3x+C\)
d) –\(\frac{5}{3} \,x \,cos⁡3x+\frac{5}{9} \,sin⁡3x+C\)