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# OCR C4 (not mei) 18th June 2013 revision Watch

1. (Original post by ihatepeople37)
Was the stationary point a maximum point?
i put minimum but not sure, i worked out the gradient a point next to it and the gradient increased :s
2. (Original post by louise_234)
i put minimum but not sure, i worked out the gradient a point next to it and the gradient increased :s
well there goes a few more marks haha
3. Did anyone get 1/4ln3 for integrating tan?

And there were 3 stationary pints for the trig equation right?
4. (Original post by louise_234)
i put minimum but not sure, i worked out the gradient a point next to it and the gradient increased :s
I put turning point...
5. (Original post by h2shin)
Did anyone get 1/4ln3 for integrating tan?
yeahhhh finally i think i got one right....
6. (Original post by h2shin)
Did anyone get 1/4ln3 for integrating tan?
That looks familiar.
7. (Original post by Vip3rgt9)
Just realised that I've made lots of mistakes... Why do I look on TSR after exams?
Me too. On Every Single Question. I am absolutely furious with myself.

Why did I think the angle in the triangle would be 117????? That's not even possible!!! What was I thinking ...
8. 9.33 for the volume

30. something for the Differential Eq
9. (Original post by ihatepeople37)
Was the stationary point a maximum point?
That's what I put
10. I found that paper pretty difficult, here's hoping for low grade boundaries.
11. when you had to integrate x^8 ln3x ... i put u as ln3x but what is that differentiated please???
12. (Original post by ihatepeople37)
when you had to integrate x^8 ln3x ... i put u as ln3x but what is that differentiated please???
1/x
13. (Original post by ihatepeople37)
when you had to integrate x^8 ln3x ... i put u as ln3x but what is that differentiated please???
1/x
14. (Original post by Maid Marian)
That's what I put
I think I put minimum. Wasn't the gradient to the right positive and the gradient to the left negative?
15. Pretty sure it was a maximum. You differentiate it again and find it's negative. (C1)
16. (Original post by louise_234)
1/x
but if you integrate 1/x you get lnx not ln3x
17. (Original post by ihatepeople37)
when you had to integrate x^8 ln3x ... i put u as ln3x but what is that differentiated please???
I actually spent a while wondering what ln(3x) differentiated to as well
18. Stationary points for the trig: (pi/2, 1) (pi/6, 1.5) (5pi/6, 1.5)
Any agreements?

Oh and gradient to left was negative and gradient to right was positive so I put minimum but can't be too sure...
19. (Original post by eggfriedrice)
Pretty sure it was a maximum. You differentiate it again and find it's negative. (C1)
yeah it was a maximum
20. (Original post by DomRusky)
I dont know if this is the best thread I cant find any others about this exact exam, but here's the paper (sorry for the scribbles)

Could someone get a mark scheme up or find Mr M??? I didnt think the paper was that bad, I need a C from it and Im confident I have that...

But yeah, mark scheme anyone??

Attachment 227913Attachment 227914

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I got roughly the same answers as you! So I'm feeling a little better. Not much though. But still. The exam could have been better. I really need a 76UMS on average on C3, C4 and S1 to get an A overall. I think C3 was much nicer. Guess I can wave bye-bye to Uni.

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