Question

hmm?

Answer 1

\[\int\limits 2x(\sin)9x)\div \cos 3^{3}(x) dx\]

Answer 2

@Saeeddiscover @Miracrown

Answer 3

I need your help

Answer 4

is that\[\int \frac{2x \ \sin(9x)}{\cos^3 (3x)} \text{d} x\]or what? :D