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# 2016 Edexcel C2 Morning exam[discussion thread] Watch

1. (Original post by Reda2)
Did you guys get for the log question 0.47 or something? And for area of S where integrate with limits to get the area, one limit was 0 and I go 3 as the other limit, what did you guys get?
-2.19
2. (Original post by Reda2)
Did you guys get for the log question 0.47 or something? And for area of S where integrate with limits to get the area, one limit was 0 and I go 3 as the other limit, what did you guys get?
I got 9 as the limit and 24.3
3. Could someone post an unofficial mark scheme?
5. How is the trigonometry question ? For the second one?
6. (Original post by David_a)
For the question that said i cant use any graphical or numerixal method to solve, i used identities to find a form where i could factorise it. I did so and then found theta with the 180-theta +360n method. Will i get marks?
The graphical or numerical methods the examiners are referring to are by using a graphing calculator to read off the line and the numerical is by trial and error.
7. (Original post by Hangk13)
What did everyone get when substituting their x value into the 2nd differential to show it was a minimum point? (very last question part e)

I got a really small decimal??
Yeah same like 0.6
8. (Original post by Gregsta99)
Could someone post an unofficial mark scheme?
http://www.thestudentroom.co.uk/show....php?t=4117259
9. (Original post by Lewis_Annear)
Yeah same like 0.6
that's not the answer you forgot to put it back into the P
10. (Original post by AstarAstarA)
S = 24.3

it was 0 to 9
I got the same. ☺️☺️☺️
11. (Original post by Hangk13)
What did everyone get when substituting their x value into the 2nd differential to show it was a minimum point? (very last question part e)

I got a really small decimal??
Same I got like 0.000093 or something
12. Who got -1.602 for the last part on Question 1?
13. (Original post by AstarAstarA)
-2.19
You got x= ( log 7 / log 2) -5 = -2.19 too? Sweeet
15. (Original post by Laceypr82)
Same I got like 0.000093 or something
I got 0.425 for d^2P/dx^2
16. (Original post by Gregsta99)
Could someone post an unofficial mark scheme?
I am going to cyber bully you
17. What did u guys get for the value of A, B and K for the binomial expansion??
18. You don't actually have to sub a value into the second derivitive. You can just keep it as the value and determine if its max/min from whether it is positive of negative.

That being said, you don't lose marks for subbing it in.
19. Loved it
20. How do you do this part?

Solve: 2^(2x+5) -7(2^x)=0

Got all the rest of the paper right, but not these 4 marks.

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