Sorry, I'm on my mobile having serious trouble uploading these pictures, but here it is (went full-out on the "step by step"(Original post by 2014_GCSE)
Can someone write out a step by step on June 2014, Q4)C)I) whilst it's been brought up.
Can't do it at all.:
EDIT: they were upside down so posting again...
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AQA A2 Mathematics MPC4 Core 4 - 9th June 2015 [Discussion & unofficial markscheme] watch
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- 07-06-2015 18:12
Last edited by datpr0; 07-06-2015 at 18:25. -
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- 07-06-2015 18:26
(Original post by datpr0)
Sorry, I'm on my mobile having serious trouble uploading these pictures, but here it is (went full-out on the "step by step":
EDIT: they were upside down so posting again... -
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- 07-06-2015 18:27
JUNE 2014 4ci. FIRST HALF OF WORKING:
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- 07-06-2015 18:29
JUNE 2014 4ci. SECOND HALF OF WORKING:
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- 07-06-2015 18:31
(Original post by 2014_GCSE)
You don't understand how helpful that is. Thank you!!!! It's taken a good 20 minutes extra ;/ because of having to upload so many times.
Last edited by datpr0; 07-06-2015 at 18:32. -
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- 07-06-2015 18:50
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- 07-06-2015 18:50
(Original post by datpr0)
I am glad you think so! It's taken a good 20 minutes extra ;/ because of having to upload so many times.
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- 07-06-2015 19:03
(Original post by mrlemma)
cant you do t+10 for the other one starting before aswell?Last edited by datpr0; 07-06-2015 at 19:05. -
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- 07-06-2015 19:07
Anybody know what the highest mark an A* has ever been for Core 4?
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- 07-06-2015 19:18
(Original post by datpr0)
In theory, yes; however, in reality no. Note that in the question it states "the value of the two paintings will be the same T years after 1991" - this is why you take T-10. If you take it as T+10, you end up with lnq^10 - ln2 = Tlnp/q but you don't know what q^10 is so you're screwed :P. If you use T-10 then you end up with a p^10 which you know from bi. = 5.
it is basically telling you to put it starting at 1991... if you put t+10 then it may have been the same in that 10 year period you deleted!!
it would have asked... t years after 2001 then it would have been correct -
Jimmy20002012
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- 07-06-2015 19:23
How do you know when to dot a vector to a line or another vector?
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Starcrossed123
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- 07-06-2015 19:34
Can somebody please help me with 8a. I don't get how you work it out. Someone please do a written answer. Thank you!
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- 07-06-2015 19:42
HIGHEST EVER MARK FOR AN A* (IN THE LAST 5 YEARS): 63
LOWEST EVER MARK FOR AN A* (IN THE LAST 5 YEARS): 58
Not too shabby folks. -
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- 07-06-2015 19:42
(Original post by Starcrossed123)
Can somebody please help me with 8a. I don't get how you work it out. Someone please do a written answer. Thank you!
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- 07-06-2015 19:51
(Original post by 2014_GCSE)
HIGHEST EVER MARK FOR AN A* (IN THE LAST 5 YEARS): 63
LOWEST EVER MARK FOR AN A* (IN THE LAST 5 YEARS): 58
Not too shabby folks. -
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- 07-06-2015 19:53
(Original post by Jimmy20002012)
How do you know when to dot a vector to a line or another vector?
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- 07-06-2015 19:56
(Original post by Starcrossed123)
Can somebody please help me with 8a. I don't get how you work it out. Someone please do a written answer. Thank you!
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- 07-06-2015 20:00
Really hoping for a single vectors question around the Q6 mark, with exponentials/differential equations as the final question. How about you guys?
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Jimmy20002012
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- 07-06-2015 20:04
(Original post by EHR223)
typically its when you are told to find the angle between two lines. Be sure to dot the direction vectors if you are dealing with two vector equation of lines.
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- 07-06-2015 20:09
(Original post by Jimmy20002012)
Right! Could you explain that a bit more, I do seem to get the questions right but how to you know for certain to dot lets say AP . CD = 0, or with the line direction vector is there some kind of rule you have to notice?
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