Pochodna funkcji (sint+cost)

$f\left(t\right) =$	$\sin\left(t\right)+\cos\left(t\right)$
$\dfrac{\mathrm{d}\left(f\left(t\right)\right)}{\mathrm{d}x} =$	$\class{steps-node}{\cssId{steps-node-1}{\tfrac{\mathrm{d}}{\mathrm{d}x}\kern-.25em\left(\sin\left(t\right)+\cos\left(t\right)\right)}}$ $=\class{steps-node}{\cssId{steps-node-2}{0}}$

$f\left(t\right) =$

$\sin\left(t\right)+\cos\left(t\right)$

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

$\class{steps-node}{\cssId{steps-node-1}{\tfrac{\mathrm{d}}{\mathrm{d}x}\kern-.25em\left(\sin\left(t\right)+\cos\left(t\right)\right)}}$

$=\class{steps-node}{\cssId{steps-node-2}{0}}$