/5 Mathematic Quiz Math quiz helps us to increase our knowledge 1 / 5 \[\frac{dy}{dx}=x^2(-\cos^23x)\frac d{dx}(3x)+2x\cot3x\] \[\frac{dy}{dx}=-x^2(\csc^23x)(3)+2x\cot3x\] 1 2 3...