Here are my answers to the questions I can remember:
Surd question: 75-32 square root 5
Circle question: equation tangent I got 7x-4y+8=0
Equation circle (x-5)^2 + (y+3)^2 = 65 (I think I forgot to add on the additional numbers from completing the square and so got this wrong, please let me know)
Coordinates B I got (12, -7)
Length CT I got 9.
Integration question: equation of tangent I got y=-32x-40
x coordinate of Q I got -5/4
Area under curve
I think I correctly got the area under the curve which was 20.25 but after that I just messed up, how many marks do you think I lost for the question? I didn't recognize the whole area of triangle and minus that from area under curve thing.
Completing the square I got (x-7/2)^2 - 41/4
There was a transformation question too and I got a translation of 0.5 and -41/4, but looking back I'm not sure if I got the signs right, I think the y value was supposed to be positive in the translation? I'm sure I got that wrong.
Something about values for k I got k=4 and k=20.
Then something else about values for k I think it was (or was it x?) And I got k>6 and k<-3/2.
Another one about finding roots of an equation and I got x= -1+/- square root of 5.
Remainder theorem I got 20.
The linear factors I got (x+3)(x-4)^2 (can't remember if the first factor was plus or minus actually, just used the one they gave)
That's all I can remember at the moment, if anyone else can shed some light on the ones I'm not sure about and tell me roughly how many marks they think I lost?
Also, what do you suppose the grade boundaries are this year?
Edit: I actually just realised that I'm pretty sure my equation for the circle is right, as the equation is (x-a)^2 + (y-b)^2=r^2 and i worked out the radius using coordinates for centre and point A then just plugged it into equation.
Also, there was another question that asked for the value of k at a specific point like (3+5k, 4-3k) to the best of my memory, and I got k=-30.
Anyone else?