Edexcel C3 June 2016 - Unofficial Mark Scheme

Guys for 8b I wrote 3/2 cotx instead of 3 cotx at the start and carried on with the wrong equation, do i lose all 6 marks? And what mark do you think for an A?

I lost about 12/13 marks on really stupid mistakes, is it possible to make up for this in C4 to get an A*?

I lost about 12/13 marks on really stupid mistakes, is it possible to make up for this in C4 to get an A*?

im in the same situation as you, people are saying that 60-62 is an A so basically only by getting full marks in c4.....

The only thing I can think of is you must have also had e rather than e^-1, so it could change to:

-5ln(0.5+0.5e)
=5ln((0.5+0.5e)^-1)
=5ln(2+2e^-1)

there are answer marks and method marks so if you got the right answer based on your wrong start, you'll get all the method marks. I'd say you'll get 3/6 or 4/6.

Probably 60-62/75 for an A

I'm not 100% sure on all of these, but I think most are correct.
kprime2's model answers: http://www.thestudentroom.co.uk/attachment.php?attachmentid=554936&d=1466601487
Question 1Question 2Question 3Question 4Question 5Question 6Question 7Question 8Question 9PDF with full worked solutions : http://www.thestudentroom.co.uk/attachment.php?attachmentid=554397&d=1466526735
3c:

I lost about 12/13 marks on really stupid mistakes, is it possible to make up for this in C4 to get an A*?

i don't find it's easy at all. what do you think about the grade boundaries for this?

What range of UMS would 63/67 out of 75 be?


Posted from TSR Mobile

hey for the 5 mark question where you had to find the equation of the normal, I attempted to find the gradient using the quotient rule but got it wrong, and I got the value of y wrong and so my equation wasn't correct either... how many marks out of 5 will i get ?

I believe the question was of the form ax^4+bx^3+cx^2+dx+e / ax^2 + bx + c
= Ax^2 + Bx + Cx+D/(x-2) ?

you'll be lucky if you get any marks if you answered the first part of that question correctly where there was a quartic expression divided by a quadratic and put it into the form asked for you should have been able to differentiate by first changing into a form suitable for differentiation involving terms with powers only then find x or y value by letting either = 0 unless they they provided it already in which case no need to equate to 0 .