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# Edexcel Mathematics: Mechanics M3 6679 01 - 17 May 2017 [Exam Discussion] watch

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1. (Original post by tiny hobbit)
In Q1 June 2015, there were 4 marks using an energy equation. If you only had one EPE term you got 0/4 on that part.
Well, shut!

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2. (Original post by the999gamer)
Well, shut!

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There goes 90 UMS

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Do you have solutions to 7b and c? I can't see them?
Here it is. Not sure why it dropped off the first edition.
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4. M3_June_2017_MA_Q7.pdf (811.2 KB, 111 views)
5. Review Ex 1 question no. 12b.
why is the answer not 2<x<=5?
6. (Original post by Medusa56)
Review Ex 1 question no. 12b, why is the answer not 2<x<=5?
The gradient is undefined at t = 5 because of the cusp (instantaneous change of gradient).
7. But the first equation is in the intervel t<=5.
So, at t=5 the gradient is still positive

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