C1 C1 proofs Watch

username51312
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#1
Report Thread starter 12 years ago
#1
when we write proofs for sum formulas do we have to wright explain anything with words or just use formulas?
and someone before here was asking about proof for discriminant for do we have to know it?
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Eddie K
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#2
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I would recommend just learning the proof off by heart from the textbook. I remember when I did A-Level maths that it was sufficient just to copy the proof exactly, no explanation is needed - as long as it looks like you know what you're doing.

Regards.
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username51312
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#3
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thanks i thought that, just on physics we were asked to do proves with explanation so i was not sure
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generalebriety
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What exactly do you mean, "prove the discriminant"?
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username51312
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#5
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im not sure, it was somewhere in the topic before i cant find it
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Breadster™
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#6
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In MEI OCR I dont think you need to know the proof for discriminants but thats not edexcel but I'm guessing it's the same since it's only C1 !
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kenobi124
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#7
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(Original post by generalebriety)
What exactly do you mean, "prove the discriminant"?
I'm guessing that to prove the discriminant is to complete the square using

ax² + bx + c
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