$\int_0^{\pi}\left(t\:sen\:3t\right)dt$
$\left(3x^{4a-5}\right)^2$
$13-5\cdot9+8$
$\cos\left(2x\right)=\frac{1}{\sqrt{2}}$
$\left(\frac{w-3}{w+2}\right)^2$
$\frac{tan\left(-x\right)}{csc\left(-x\right)}$
$\int\frac{\sec^2\left(4x+7\right)}{\tan^2\left(4x+7\right)}dx$
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