\frac { \sin 3 x } { \cos ^ { 2 } 3 x } d x
Evaluate
\frac{dx\tan(3x)}{\cos(3x)}
Differentiate w.r.t. x
\frac{d\left(144x\left(\sin(x)\right)^{2}\left(\cos(x)\right)^{4}-36x\left(\cos(x)\right)^{2}\left(\sin(x)\right)^{4}+12x\left(\cos(x)\right)^{6}+24x\left(\sin(x)\right)^{6}+12\sin(x)\left(\cos(x)\right)^{5}+12\cos(x)\left(\sin(x)\right)^{5}-5\left(\sin(2x)\right)^{3}\right)}{4\left(\cos(x)\left(\left(\cos(x)\right)^{2}-3\left(\sin(x)\right)^{2}\right)\right)^{3}}
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