QED. You might have seen those three letters and wondered what they mean. ‘Quod erat demonstrandum’ is latin for ‘that which was to be demonstrated’. In mathematics we don’t like uncertainty; we like to be absolutely sure of the results we have found, which is why we always like to prove our conjectures. Proof is not always easy, but it is very satisfying! In this activity you will be looking at consecutive...
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