Also, I've written an Enhanced Examination Paper for this module, specifically including MEI questions to help you all
It is meant to be a significantly more challenging examination of general concepts specified by different boards. It is fully doable for students with knowledge of standard FP1, C1, and C2 material.
Being able to make a good start on all of the questions is a good indicator that you are on track to a strong A in this module.
Also, I've written an Enhanced Examination Paper for this module, specifically including MEI questions to help you all
It is meant to be a significantly more challenging examination of general concepts specified by different boards. It is fully doable for students with knowledge of standard FP1, C1, and C2 material.
Being able to make a good start on all of the questions is a good indicator that you are on track to a strong A in this module.
When drawing an argand diagram, should you write 'j' next to the numbers on the y axis? Sometimes the mark schemes do and sometimes they don't, is there a 'proper' way to do it?
When drawing an argand diagram, should you write 'j' next to the numbers on the y axis? Sometimes the mark schemes do and sometimes they don't, is there a 'proper' way to do it?
I would assume so, just to be safe; you wanna look like you know what you're doing. Not all examiners will give you the benefit of the doubt so you don't wanna risk it!
Could anyone help me with how to do part (iv) of this question? I know how to do the rest of it.
(from January 2012)
Think about drawing triangles from the origin, to the centre of the locus, and then to the points A and B, then you can use trig to find the angles (the arg lines are tangents to the circle so they meet the radius at a right angle)
Think about drawing triangles from the origin, to the centre of the locus, and then to the points A and B, then you can use trig to find the angles (the arg lines are tangents to the circle so they meet the radius at a right angle)
When drawing an argand diagram, should you write 'j' next to the numbers on the y axis? Sometimes the mark schemes do and sometimes they don't, is there a 'proper' way to do it?
Usually you put Re on the x axis and Im on the y axis so you dont need to put j next to those numbers
I posted some answers and hints on the Edexcel post here.
I will upload the MEI answers and hints in a sec.
Can you give some more straightforward answers for the questions please? Also under the summations it states r=0, is this the same as r=1? Otherwise, I think 15) on MEI is impossible and makes solving 3) seem wrong too. Anyway here are my answers if you want to correct them:
3) 4n(n-1) 4) line through (0,-j) and (1,0) and then shaded underneath line 5) 3-j, -1+2j, -1-2j 6) A-1 = (-0.5A + 1.5I) 7) 45 degrees anti clockwise followed by enlargement of s.f. 3 12) x=2 for asymptote and then graph 13) (a,0) and (0,a), asymptote is (-1/a) and then got x=-1 for d) 14) a/4w^2 + b/2w +c and aw^2 + (2a+b)w + (a + c + 1)