$2sin2xsinx-cosx=0$

$6xz\:\:\:\:\:;\:\:\:x=1\:\:;\:\:\:\:y=2\:\:\:\:;\:\:\:\:\:w=3\:\:\:;\:\:\:\:z=\frac{3}{2}\:\:\:$

$\left(3x^{2}+2xy^{2}-2x\right)dx+\left(3y^{2}+2x^{2}y-2y\right)dy=0$

$49\left(-12\right)$

$\int_0^{\frac{\pi}{3}}\sqrt{1+\tan^2\left(x\right)}dx$

$2+x+2$

$\frac{dy}{dx}-2y=16$