Matematyka
$f\left(x\right) =$ | $35{\cdot}\cos\left(7x\right)$ |
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$\dfrac{\mathrm{d}\left(f\left(x\right)\right)}{\mathrm{d}x} =$ |
$\class{steps-node}{\cssId{steps-node-1}{\tfrac{\mathbf{d}}{\mathbf{d}\boldsymbol{x}}\kern-.25em\left(35{\cdot}\cos\left(7x\right)\right)}}$ $=\class{steps-node}{\cssId{steps-node-2}{35{\cdot}\class{steps-node}{\cssId{steps-node-3}{\tfrac{\mathbf{d}}{\mathbf{d}\boldsymbol{x}}\kern-.25em\left(\cos\left(7x\right)\right)}}}}$ $=35{\cdot}\class{steps-node}{\cssId{steps-node-4}{-\sin\left(7x\right)}}{\cdot}\class{steps-node}{\cssId{steps-node-5}{\tfrac{\mathbf{d}}{\mathbf{d}\boldsymbol{x}}\kern-.25em\left(7x\right)}}$ $=-35{\cdot}\class{steps-node}{\cssId{steps-node-6}{7}}{\cdot}\sin\left(7x\right)$ $=-245{\cdot}\sin\left(7x\right)$ |