There are 3 NRICH Mathematical resources connected to Chain rule, you may find related items under Calculus.
Broad Topics > Calculus > Chain rule
What is the quickest route across a ploughed field when your speed around the edge is greater?
Find all the turning points of y=x^{1/x} for x>0 and decide whether each is a maximum or minimum. Give a sketch of the graph.
Can you find the differential equations giving rise to these famous solutions?