[See Steps] Integrate ∫ cos ^2(3x) sin
Question: Integrate
\[\int{{{\cos }^{2}}\left( 3x \right){{\sin }^{2}}\left( 3x \right)}dx\]
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![[All Steps] Find the limit of the](/images/solutions/MC-solution-library-44268.jpg "[All Steps] Find the limit of the improper integral")
