AQA FP1 Unofficial Markscheme June 14th 2017

You're ****

Question 1: step by step differential eqn
(4,8), final answer when 4.6, y=8.0581 (4dp)

Question 2:
A) show that p^2=20q+400
5x^2+px+q=0
Sum:-(p/5)=2a+4
Productq/5)=a^2+4a
Rearrange to get the answer

B) can't remember

Question 3:a) z=i(1+i)(2-i)
Show that z=3+ki solution is k=1

b) something about m and n, m=6, n=-5

Question 4)
A) integration thing
Answer was: 1/√c -1/√d

Bi) no value as 1/0
Bii)1/3

Question 5:
A) area of rectangle 4x8=32
B) matrice 1,0,0,2
C)transformation, 3 units to right, a=3
D)a=3, b=+or-1, p=-6,q=+or-8

Question 6)
A)tan(2x+π/2)
X=nπ/2-π/12
B) don't know

Question 7)
A) summations, a=1,b=-2,c=-1 (in any order)
B) I got 8 and -2, don't know if right

Question 8) matrices
A) reflection in line y=-x
B) -1,5/2,7/2,forgotten this number
C) -4/5, -3/5, 3/5, -4/5
D) coordinates are (18,-1)

Question 9:
A) x=-1,x=3,y=2
B) show that 4k²-3k-1≥0, take discriminant
C)find the length, take critical values of k, by solving for k in part b
K=1, k=-1/4
X=-2, x=-1/3
Coordinates are then (-2,1) and (-1/3,-2/3)or something like that
Can't remember final answer

lol did anyone find that paper good? It was terrible!
Btw pretty sure that the final answer to 9 was 25/12.

It was banta man. We made it together 😂

Anyone have any luck with 5b)?

GS of sin3x-sin4x given tan(2x+pi/2)=sqrt(3)?

I struggled with that one too - I used my general solution from part (a) and literally just substituted in what my x general solution (in terms of pi and n). Wasn't sure at all, especially considering the wording with 'possible values' or something, it seemed as though you might have to sub a few things in.