Pierre de Fermat Pierre de Fermat Pierre de Fermat was a French lawyer and government official most remembered for his work in number theory; in particular for Fermat's Last Theorem. He is also important in the foundations of the calculus. Pierre de Fermat was a French lawyer and government official most remembered for his work in number theory; in particular for Fermat's Last Theorem. He is also important in the foundations of the calculus.
We can use implicit differentiation to find:
But so is positive. We can use implicit differentiation to find:
We could use the same technique to find and.
Example a. b. c. Example