How come the boundaries for June 2015 IAL are so low? 60 for an A* and 66 for full ums. It seems pretty standard to me. Are the grade boundaries much lower now than they were before?
How come the boundaries for June 2015 IAL are so low? 60 for an A* and 66 for full ums. It seems pretty standard to me. Are the grade boundaries much lower now than they were before?
Pretty much. Last year's home FP3 paper had low grade boundaries due to a very tough coordinate systems question at the end. The main method in the mark scheme isn't even on the spec (sum of roots). And solving it with the factor formulae was very difficult algebraically. Hence why the grade boundaries were lowered so much (53 = A).
They like to play around with FP3, so be prepared for anything IMO. But don't count on low boundaries this year. It's unpredictable. Some years they're high (boundaries and examiners it seems), some years they're really low.
How come the boundaries for June 2015 IAL are so low? 60 for an A* and 66 for full ums. It seems pretty standard to me. Are the grade boundaries much lower now than they were before?
Perhaps it was the fatigue from S2? As an IAL candidate I'm personally tired as crap so that might probably be affecting candidates
Pretty much. Last year's home FP3 paper had low grade boundaries due to a very tough coordinate systems question at the end. The main method in the mark scheme isn't even on the spec (sum of roots). And solving it with the factor formulae was very difficult algebraically. Hence why the grade boundaries were lowered so much (53 = A).
They like to play around with FP3, so be prepared for anything IMO. But don't count on low boundaries this year. It's unpredictable. Some years they're high (boundaries and examiners it seems), some years they're really low.
I was talking about the international version. I can see why last year's paper was hard . Tbh I think I only need about 80 ums in fp3 or s2 to get the A* in further maths so I'm not too worried.
to someone whos done all pp, whats been the hardest topic generally?
also im doing all questions from old spec on physicsmathstutor and to anyone else whos done them, can you comment if the questions from previous years have been easier or harder than old spec ones?
Why the answer gives 4pir^2, should it not be 2pir^2, as it is rotated only through pi radians about the x-axis. So the formula used should be pi... instead of 2pi...?
Why the answer gives 4pir^2, should it not be 2pir^2, as it is rotated only through pi radians about the x-axis. So the formula used should be pi... instead of 2pi...?
Thanks in advance
The circle only needs to be rotated through pi radians since the top half rotates as the bottom half does so each sector rotates through pi radians. I hope that makes sense. If you rotated it through 2pi radians you would be going over the exact same area twice so your value for the area would be doubled.
The circle only needs to be rotated through pi radians since the top half rotates as the bottom half does so each sector rotates through pi radians. I hope that makes sense. If you rotated it through 2pi radians you would be going over the exact same area twice so your value for the area would be doubled.
please explain again please, if you dont mind, sorry to bother