There are **3** NRICH Mathematical resources connected to **Differentiation of parametric and implicit functions**, you may find related items under Calculus.

Challenge Level

The family of graphs of x^n + y^n =1 (for even n) includes the circle. Why do the graphs look more and more square as n increases?

Challenge Level

Investigate the family of graphs given by the equation x^3+y^3=3axy for different values of the constant a.

Challenge Level

Can you find the maximum value of the curve defined by this expression?