$18-\left(7v+1\right)$
$tangente$
$\left(-7\right)\left(11\right)\left(-3\right)\left(-2\right)$
$\frac{tan\left(x\right)cos\left(x\right)+sen^2\left(x\right)csc\left(x\right)}{1-cos^2\left(x\right)}$
$-\frac{sin\left(t\right)}{1-cos\left(t\right)}+\frac{sin\left(t\right)}{1+cos\left(t\right)}=-\frac{2}{tan\left(t\right)}$
$\int\frac{9x-8}{\left(-3\right)\left(2x-5\right)}dx$
$\frac{4sin4x}{4x}$
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