That was not at all fun.
I got full UMS on the 4 most recent past papers, and seeing as the standard grades of papers should be equal, I hope the grade boundaries are low. Maybe 63-65 for full UMS? 63 was full UMS for Jan 2013 remember.
Vectors: anyone else get D (5, 1, 2)? or something similar
I couldn't find the coordinates of E though. I got some massive quadratic involving mu, where mu was like 2.3821 and -2.5832. I kind of gave up on that one. Hope I get some method marks though for working out the area of the smaller triangle ( (sqrt1802)/2) anyone?
Differential question was deceivingly tricky. It looked almost too simple. I'm not sure. As it said write down the differential equation I assumed we did not have to do any working out for that part.
dh/dt = a.cos(kt) right?
then max. when a.cos(kt) = 1.3
when kt=0, a = 1.3
then I just guessed k = 12? As it occurs once every 12 hours.
The last question I got something like 364~ cm, give or take 5cm.
Also question 2d I found difficult, only realised after the exam you could draw triangles to find sin(beta) and cos(beta). Hoping here I get 2 marks for method though.
Overall I think I've dropped around 8-10 marks. By far my lowest mark out of all the past papers I did.