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9 FURTHER APPLICATIONS OF INTEGRATION

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DISCOVERY PROJECT<br />

Arc Length Contest<br />

This interesting project requires students to discover formulas for two positive functions with area 1 over<br />

[0, 1] satisfying f (0) = f (1) = 0. The basic idea is to find the graph with minimal arc length. You may<br />

want to add the condition that the functions be differentiable. Since one example is given with L < 3, this is<br />

a challenging project.<br />

495

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