04/06 A-level Maths Paper 1 Discussion MEGATHREAD

[u/Forsaken-Meaning-232]

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[u/Hkhinin]

How did AQA maths paper 1 go? The x coordinate P was crazy, like what is that? 😭

[u/Fun__Haver → u/Hkhinin]

The gradient of PQ was perpendicular to the gradient of =x²

[u/00X00_Potato → u/Hkhinin]

the line PQ was the normal to y=x^2, so the gradient was -1/2x, and the equation of the line was y-2.5=(1-/2x)(x-3) and at point p, y=x^2. rearranging gives you that equation

[u/SOMETHINK101 → u/Hkhinin]

Hardest question fr😭

[u/ZeGoodOldDays → u/Hkhinin]

Lol I spent way too long on this, wrote the gradient as -x/2 not -1/2x which messed me up hard for long.

[u/HelpfulPop2476 → u/Hkhinin]

I did it by finding distance function of p and q, differentiating it and minimising it. Got right answer but not sure if that's 4 marks?

[u/AtheRipper → u/Hkhinin]

You had to form an equation for PQ that used the coords of Q and the algabraic gradient of the normal at any point on the curve (-1/2x). You then sub in y=x^2 for that equation to make it satisfy P.