$3sin^2\theta\:+4cos^2\theta\:=3+cos^2\theta\:$
$\arctan\left(1.3217\right)$
$\frac{1}{2}\int\sin^2\left(x\right)dx$
$23-45$
$x+3+3x^2-3x+6$
$x\:+2y\:-z=2$
$0,6+0,6$
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