Quite an easy paper actually, I think the grade boundaries will be high.

Did anybody get 0.47 something for the time exceeding 4000, using radians mode on the calculator?

I got something like that, 0.473 maybe?

Reply 2487

Humbers

Original post by Quackmatic

On the last question, did you all remember to subtract the volume of the cone, too? I ended up with pi*(13 ln(3)-27)/ln(3) or something.

The answer was 13pi/ln3

Reply 2488

talkbiology

For the Cartesian equation, a=2 and b= -5? Setting out the proof was quite tricky

Reply 2489

Mutleybm1996

Original post by talkbiology

For the Cartesian equation, a=2 and b= -5? Setting out the proof was quite tricky

I got -25/2 or something

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Reply 2490

Kinivo

Original post by anndz3007

for the ln2 question, did anyone get 32(ln2 square)-32ln2+12 ??

Yea buddy

Reply 2491

bored565

Original post by phoenixsilver

Quite an easy paper actually, I think the grade boundaries will be high.

Did anybody get 0.47 something for the time exceeding 4000, using radians mode on the calculator?

I used radians because I'm 90% sure I read in the textbook somewhere that you can't use degrees with sin/cos/tan in calculus.

I'm pretty sure i got 0.3 something though and I'm confident it was right. Did you use P = 4 and not 4,000?

Reply 2492

Datta10

Is integrating 3^2x, 3^x/ln3 ?

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Reply 2493

The fish inspect

Original post by talkbiology

I got 31.82 for angle and something like 7.46 for the length, basically 10root2 times the sine of the angle

Yess some boy me class said he got 60 something, glad I'm not the only one who got 31.

Reply 2494

Alex103

Ugh got 27.1 years for P = 4000 or something, did it in degrees... is that just 1 mark gone or 2?

Reply 2495

MrBowcat

Original post by Jasmine:))))

should be 40pi/ln3

I got 80pi/ln3 for the area under the whole curve then either 67pi/ln3 or 57/piln3 can't remember

Reply 2496

HItchslapped

VOTE NOW ON HOW YOU FOUND THIS EXAM!
Click here: http://www.thestudentroom.co.uk/show....php?t=3407487
Note: C4 JUNE 2015 UK paper ONLY!

.

Reply 2497

Neilg99

Was the ln2 area 32ln2 -12??

Reply 2498

Bustamove

I need to see arsey's markscheme... so far I've got 8b) wrong but I think I should get method marks for doing volume under curve minus volume of cone... I got last part of question 7 wrong because I used 4000 instead of 4....
I find it so much easier to make stupid mistakes in C4 than C3.... Please gods of edexcel, let me still get an A

Reply 2499

phoenixsilver

Original post by NJ4769

I got something like that, 0.473 maybe?

Yeah, that's what I got.
I actually tried doing it in degrees as well, I got 27 years. I then decided that nobody would carry out a wildlife study for 27 years so I banked on my radians answer LOL.

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