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There are **3** NRICH Mathematical resources connected to **Chain rule**, you may find related items under Calculus.

Problem
Primary curriculum
Secondary curriculum
### Quick Route

What is the quickest route across a ploughed field when your speed around the edge is greater?

Age 16 to 18

Challenge Level

Problem
Primary curriculum
Secondary curriculum
### Exponential Trend

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.

Age 16 to 18

Challenge Level

Problem
Primary curriculum
Secondary curriculum
### What's My Equation?

Can you find the differential equations giving rise to these famous solutions?

Age 16 to 18

Challenge Level