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Standard simple integrals asked for (1/x, sin(x), cos(x), x^2, x, e^x)

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Standard derivatives asked for (e.g. $x^n$, $1/x^n$, $\sqrt(x)$, $\ln(x)$, $\sin(x)$, etc.) .  

Questions which try to emphasise that f(x) does not mean f times x.

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This question loads an extension which contains a dataset in JSON format. The data is made available as a JME variable called 'animal_data'.

A quick implementation of certainty-based marking: the student's score depends on how they rated their certainty in their answer before submission.

Because Numbas doesn't allow negative marking at the moment, scores are shifted upwards, so a high certainty incorrect answer scores 0, and a high certainty correct answer scores full credit.

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JSXGraph code based on original by Christian Lawson-Perfect

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