2016 EDEXCEL CORE 1 MAY 18TH - Unofficial Markscheme 2016

I messed it up pretty bad. I need to do well in the others to pull up my overall grade

Well I doubt a lot of people would have got full marks in the paper to say the least!! Can't tell though, but I reckon they will have to be significantly lower.

Nearly did, I integrated, instead of differentiating for question 7. I'm completely hurt

EDEXCEL C1:
Q1) 2/5X^3-8X^1/2+3X+C
Q2) y=6X+2
Q3)a) 2root 2
b) 3root 6
Q4a) stretch in y-direction by scale factor 3.
b) translate by vector (0,-4) (downwards)
Q5) X=-1/7 ; Y= -1/3 X=-3/7 ; Y=1/3
Q6)a) A2= 5-4K A3= 5-5K+4K^2
B) 4K^2-9k+1
C)I) I forgot to do again lol
C)II) 500 (OMFG WAT WAS THIS?!)
Q7)dy/dx= 6X+2X^-2/3+X^1/2+7/6(X^3/2)
Q8)a) proof of inequality- had to substitute the 2 equations and the discriminant<0
b) 1/2<P<9/2
Q9)a) £225
b) £180
c) £1710
d) 18 years from 10 years old so 27 years old
Q10)a) 5Y+3X-44=0 b) R: (44/3,0) c) area of Quad: 76 units (this proved extremely difficult when splitting into 2 triangles, so I split in 2 triangles and a rectangle)
Q11)a) dy/dx= 6X^2+2KX+5
b) K=41/8=5.125
c) y co-ordinate- 49/2
D) 2y-17x-83=0

give the correct answer if any of these are wrong and ill edit it

I got Q10 c) area = 163/3
Q11c) 1/2
d) 2y-17x-35=0

Damn you have a good memory. That's sick!
For 9C i got £1050 but I may have messed up on it.
For 11 C and D I got the Y to equal 1/2 and D I got 17x-2y + 35 =0 so again I may have messed up.
For 10c : I am pretty sure that it is 162/3 units^2 and not 76 via splitting it into a trapezium and triangle.
I agree with the simultaneous equations - I definitely got answers like that.
Thanks for remembering Q11 A I agree with that and they for the rest I got the same!

You got that right. Nearly got full marks, but I messed up on the easiest thing

Got what right the answer or the miscalculation

Lool the answer was right. 163/3 or 54 1/3

Anyone know how many marks per question?