$\frac{secx+1}{secx}=1+cosx$
$\log_{10}\left(x^2+1\right)-\log_{10}\left(x\right)=1$
$3+8x\:<15+4x$
$\int_0^1e^{-x}dx$
$-5+3x>11-x$
$y'=asin2x+bcos2x+ce^x$
$\tan^2x+\tan x\cot x$
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