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Maths Ocr 2016 C1

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no bobby is right, go to https://www.desmos.com/calculator and copy/paste y=x^2\left(3-x\right) and y=\left(x-2\right)^2\left(5-x\right) into the left side.

/Users/alfiehowell/Desktop/Screen Shot 2016-05-18 at 12.51.09.png

The curve hasn't been just shifted though?

Reply 141

PeteM

Anybody agree that this was BY FAR the hardest C1 paper ever produced?

Reply 142

CC21231

Yep definitely

Original post by PeteM

Anybody agree that this was BY FAR the hardest C1 paper ever produced?

Reply 143

AlfieH

This looks like the correct graph to me, hence the answer was (x-2)^2(5-x)

Screen Shot 2016-05-18 at 12.52.28 copy.jpg

(edited 7 years ago)

Reply 144

Jamesk123

Think these were the questions

Reply 145

Saching99

What did oeople get for the simultaneous equatipns one , not the 1/16 and 81 one ?

Reply 146

Fabthelion

What do you guys think the grade bounderies will be and do yoiu guys think the C2 and S1 paper will be as hard as this?

Reply 147

Otti_mitch

Original post by Bobby21231

I got 50.25 how about you

I got this too!!

Reply 148

ComputeiT

for the disguised quadratic substitution I got values of 3 and 1/2 but squared instead of ^4 - how many marks do you think I will lose?

(edited 7 years ago)

Reply 149

tom_lewis7

What on earth was that?!

Reply 150

phat-chewbacca

Can anyone remember the quadratic substitution question?

Reply 151

Liv_hadley99

Original post by Bobby21231

I got 50.25 how about you

I got 50 but I really wasn't sure of it :frown:

Reply 152

julesaquilina

Original post by phat-chewbacca

Can anyone remember the quadratic substitution question?

I put x equal to y^1/4 and i got y=1/16 and 81

Reply 153

Otti_mitch

How did you do the tangent to the circle at A question? Got that really wrong... :frown:

Reply 154

Saching99

Anyone remember the answers /or the question itself to the simulatenous equation one

Reply 155

AlfieH

Grade boundary discussion. What are we all thinking? I reckon 61/72 for an A.

Reply 156

KevinGu123456789

Guys the answer to the last question was 27, but for some stupid reason, I left the answer as:

8 x (√27/12)^3

Now, I checked on my calculator, and it is equal to 27, but I'm not sure about whether my form is acceptable. My intermediate working was all right, so do you think that they will dock marks, and if so, how many?

Reply 157

catwat99

Original post by AlfieH

Grade boundary discussion. What are we all thinking? I reckon 61/72 for an A.

I think (and hope) it'll be in the high fifties for an A

Reply 158

blinin7

Indices: Q5 pt 2:
2^13/2
Because:
it was 8(2^4/3) = 2^3 x 2^4/3 = 2^13/3.
Quite sure its correct as lots of people around me got the same answer

Got 27 for last Question, although i left it as a surd.

Im also sure the radius was 0<r<=2
As when you put y=0 into the circle equation, you got x=-2
Given the centre of the mini circle was at the origin, and had to be within the larger circle, the furthest it could have been was 0 -> -2 giving it a radius of 2 or less? It was only 2 marks so I cant see how it would be more complex than that?

Hoping grade boundaries low (56-58), definitely much harder than past papers. Everyone was of the same opinion, few of further maths kids didnt finish it and theyre the 100UMS type.