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

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    (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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    (Original post by the999gamer)
    Well, shut!

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    There goes 90 UMS

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    (Original post by cookieraiderr77)
    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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  1. File Type: pdf M3_June_2017_MA_Q7.pdf (811.2 KB, 111 views)
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    Review Ex 1 question no. 12b.
    why is the answer not 2<x<=5?Name:  Screenshot_2018-09-10-10-19-57-627_com.google.android.apps.docs-compressed.png.jpeg
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    (Original post by Medusa56)
    Review Ex 1 question no. 12b, why is the answer not 2<x<=5?Name:  Screenshot_2018-09-10-10-19-57-627_com.google.android.apps.docs-compressed.png.jpeg
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    The gradient is undefined at t = 5 because of the cusp (instantaneous change of gradient).
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    But the first equation is in the intervel t<=5.
    So, at t=5 the gradient is still positive
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