$1+y^{\prime}+y\cot x=\cos x$
$-2-3-\left(-6\right)+12$
$\sec\left(x\right)-\cos\left(x\right)=\frac{1-\cos^2\left(x\right)}{\cos\left(x\right)}$
$\int\left(\frac{1}{\sqrt{5x+4}}\right)dx$
$4.7+6^2+3$
$2x-10+3x-+5x$
$\left(879-9+648\cdot\:2\:\right)$
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