Vans B.

# Optimisation

Two poles, one 8 meters tall and one 18 meters tall, are 24 metres apart. A length of wire (L) is attached to the top of each pole and it is also stalked to the ground somewhere between the two poles. Where should the wire be staked so that the minimum amount of wire is used? (you make assume d^2L/dx^2>0)

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