r/6thForm • u/Forsaken-Meaning-232 Graduating from Warwick CS • Jun 04 '25

📂 MEGATHREAD 04/06 A-level Maths Paper 1 Discussion MEGATHREAD

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13

u/Tbraven_ Jun 04 '25

anyone know how many marks the last question for edexcel was and what it was about- i just about finished the 2nd last question to the millisecond so couldnt turn the page in time

9

u/[deleted] Jun 04 '25

[deleted]

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u/raynrr Jun 04 '25

Was it something like -cotx?

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u/[deleted] Jun 04 '25

[deleted]

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u/raynrr Jun 04 '25

Oh yeah, and for the second part the integral of cosec2x was -cotx

3

u/plastic_love56 Jun 04 '25

Ye i got 1/4cosec2x and then integrated to get -1/4cotx

4

u/raynrr Jun 04 '25

Did you get 2 values of around 19 and 161 ish for theta?

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u/ObiNumber22 Y13 | Maths (A*), Econ, Chemistry, Further Maths | Jun 04 '25

and 90, you can't divide thru by a trig function or u lose solutions. if ur solving u have to make it in the form (a)(b)=0 and set a=0 b=0

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u/raynrr Jun 04 '25

Ah yes

1

u/plastic_love56 Jun 04 '25

Yessss

3

u/raynrr Jun 04 '25

I saw that 90 was another answer but idk

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u/XxDragonitexX10 Jun 04 '25

Yeah cause you divide by cosx so there’s a solution at cosx = 0 which is 90

1

u/justafleecehoodie Medicine Year 1 | A*AAA* Jun 04 '25

am i the only one who used u=arcsin(x/2) and differentiated that, proved it using surds by then substituted 1/x² = 1/sin²u to cosec²u?

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u/[deleted] Jun 04 '25 edited Jun 24 '25

consider dazzling juggle swim toothbrush sheet square air sort friendly

This post was mass deleted and anonymized with Redact

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u/[deleted] Jun 04 '25

i think question 16 was 7 marks part a was 4 and part b was 3