Joe+S

Go Exeter!

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A geogebra app demonstrating the closeness of the trapezoidal sum under a curve to the integral.

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A revised app showing how the derivative behaves with cusps. Do I need to change anything else to make it correct? (function-wise?) Feeback appreciated.

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An app exploring Exeter 4C 2011, page 10, problem 3 on polar spirals

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Exeter 4C 2011, page 12, problem 10 media type="custom" key="19212492" align="center"

Geogebra Conference Test media type="custom" key="19212490"