$257.856+143.148$
$\frac{1+sinx}{cosx}-\frac{cosx}{1-sinx}=0$
$\frac{1}{\sqrt{\left(1+x^2\right)ln\left(x+\sqrt{1+x^2}\right)^2}}$
$\int\frac{8x-3}{\left(x^2-5x+6\right)}dx$
$x^2-8x+10=0$
$81x^4-16y^2$
$\frac{dy}{dx}=cosy\left(7-x\right)$
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