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Pochodna funkcji tanx^2

$f\left(x\right) =$	${\left(\tan\left(x\right)\right)}^{2}$
$\dfrac{\mathrm{d}\left(f\left(x\right)\right)}{\mathrm{d}x} =$	$\class{steps-node}{\cssId{steps-node-1}{\tfrac{\mathrm{d}}{\mathrm{d}x}\kern-.25em\left({\left(\tan\left(x\right)\right)}^{2}\right)}}$ $=\class{steps-node}{\cssId{steps-node-2}{2}}{\cdot}\class{steps-node}{\cssId{steps-node-3}{\tan\left(x\right)}}{\cdot}\class{steps-node}{\cssId{steps-node-4}{\tfrac{\mathrm{d}}{\mathrm{d}x}\kern-.25em\left(\tan\left(x\right)\right)}}$ $=2{\cdot}\class{steps-node}{\cssId{steps-node-5}{{\left(\sec\left(x\right)\right)}^{2}}}{\cdot}\tan\left(x\right)$

$f\left(x\right) =$

${\left(\tan\left(x\right)\right)}^{2}$

$\dfrac{\mathrm{d}\left(f\left(x\right)\right)}{\mathrm{d}x} =$

$\class{steps-node}{\cssId{steps-node-1}{\tfrac{\mathrm{d}}{\mathrm{d}x}\kern-.25em\left({\left(\tan\left(x\right)\right)}^{2}\right)}}$

$=\class{steps-node}{\cssId{steps-node-2}{2}}{\cdot}\class{steps-node}{\cssId{steps-node-3}{\tan\left(x\right)}}{\cdot}\class{steps-node}{\cssId{steps-node-4}{\tfrac{\mathrm{d}}{\mathrm{d}x}\kern-.25em\left(\tan\left(x\right)\right)}}$

$=2{\cdot}\class{steps-node}{\cssId{steps-node-5}{{\left(\sec\left(x\right)\right)}^{2}}}{\cdot}\tan\left(x\right)$