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prove? parabola investigation

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During this type I, you come up with conjectures. At different stages it asks you to 'prove' your conjecture. What does this mean? I suppose if it said 'prove for values such and such and for something equals.... etc' they would mean induction, but what do they mean here? Is just plugging numbers in also called a proof?

Any help would be greatly appreciated.

Edited by pinkseel

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If you're talking about the zeroes of cubic function investigation, you need to prove it using algebra. I'm not sure which task you're talking about.

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If you're talking about the zeroes of cubic function investigation, you need to prove it using algebra. I'm not sure which task you're talking about.

In general actually, I think I'll try looking up definitions of proofs and stuff.

Edited by pinkseel

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