Edexcel C4 June 2014- OFFICIAL THREAD

Scroll to see replies

For the volume question it said u may use the formula what if u didnt and just worked out the volume of the curve using the normal equation would that get u any marks out of 9

Posted from TSR Mobile

Reply 1781

Squiffyk7

Original post by SuperMushroom

There's always one...

Posted from TSR Mobile

trollolololol? or some arrogant *********?

Reply 1782

proxyfullback

Original post by Squiffyk7

So did I, seen alot of people say they for -11/8

i got -11/8 i think too

Reply 1783

MathsNinja

Original post by StarvingAutist

I am so ****ed. I did 6(iii) wrong, 7 wrong, the last part of 8 wrong. So I may have scraped 10 method marks out of 25. If I've lost 15 marks I'll be happy.

I am in the exact same boat as you, it was all going fine and I was quite happy then it went downhill very quickly XS

Reply 1784

ThatManAlex

Original post by Mutleybm1996

What did everyone get a and z on the binomial?
2/3 and something?

Posted from TSR Mobile

I got A = 45/2

Reply 1785

whitney_luxie

to be honest...it's not going to drop below 61 for an A, look at the past grade boundaries, no way a 56/58 will be an A, but it'll probably be a lower bound B. Although the last 3 questions were a lot trickier than the first 5 it is still doable, so the ones who usually do well in maths will still pull up the grade boundaries. those ****ing integration though all of them are crazy.

If I get a B, I'm satisfied. But there goes for firm uni :frown:

it was a nice dream.

Reply 1786

Dilzo999

Original post by jollygood

Hey I only calculated the volume under the curve between pi/4 and 0. But didnt take away any volume. Can you please tell me how many marks I will get out of 9?

Posted from TSR Mobile

About 2 probably

Reply 1787

Chris.P

Original post by proxyfullback

For the volume question i found the volume of the area under curve C from 0 to 3) and then found the volume of the area under normal between 5/3 and 3 and then just subtracted them giving you the volume of the shaded area (if that makes sense) which ended up in the correct form asked for

Yep same

Reply 1788

ThatManAlex

Did people get A = 45/2?

Reply 1789

jollygood

Original post by Salamanderf

folks for the cosec2ycosec, could you do substitution because that's what i did and answers are looking familiar. OOooh yeah and volume of revolution, totally forgot about the area calculation with parametrics, how many marks would i get for squaring y then integrating etc.

This is exactly what I did too. Just squared the y and calculated the area under the curve between two limits. Didnt take away any volume? How many marks do you think we will get?

Posted from TSR Mobile

Reply 1790

acciolucy

Original post by alexmufc1995

Lets see, notable answers:

9root2 at the end (Trapezium)
92/9 pi + 6 pi squared (Volume)
(siny)^3 = 1.5e^x - (11/8) (Differential)

Anyone want anymore?

I couldn't do the trapezium one (well I made up one of the values so i did it but not accurate) but got the same for the other 2! :biggrin:

Reply 1791

Squiffyk7

Original post by ThatManAlex

I got A = 45/2

That number looks familiar to me.

Reply 1792

dandroff

Just wondering why no one is talking about the cartesian equation question. It was question 5 I think.... did you all find it easy :/ I didn't even attempt it cos ... well... I just couldn't. .

Reply 1793

Mutleybm1996

Original post by ThatManAlex

I got A = 45/2

Yes

22.5! I forgot the exact values

Posted from TSR Mobile

Reply 1794

proxyfullback

Original post by Dilzo999

It's a perfectly valid method, just more tedious.

Literally i did it and it took forever and i got 3/4 way through and i thought because it was so long i must of got it wrong but tbf it does seem a valid method

Reply 1795

dandroff

Original post by Squiffyk7

That number looks familiar to me.

What q is that for?

Reply 1796

BayHarborButcher

Original post by Shimin

I did something weird and found lamba from the vector equation for L2 to be 1 at C which I then subbed back to get the coordinates. Then I used that to find D.
Your way was probably easier seeing as it was only a few marks...