3 ms·f\left ( x \right )=e^{x} \to {f}'\left ( x \right )=e^{x}by allengoodman 16y agof\left ( x \right )=e^{x} \to {f}'\left ( x \right )=e^{x}jackowayed 16y agoFor those that prefer not to read TeX, that's saying that d/dx (e^x) = e^x