EdExcel A-Level Further Maths June 2022 Paper 1 (Core Pure 1)

[NicholasAn]

Hi, thanks for the amazing video. I would just like to note that for question 7b) At 1:07:56 when a is positive b is positive and when a is negative b is negative. So only the first and last values for z would be valid.

You could check this is the case if you plug in the other 2 values into z/z* where they give 7/9 - 4sqrt2/9 i
instead it should give a plus sign

This is also because a = 2sqrt2 b
So either they are both >0 or both <0

[Daniel-gnyv]

for 7b, i used a^2+b^2=18 and also ab=4root2, the equations are correct as stated in the mark scheme however i get 4 different answers for a and 4 different answers for b, why is it that this combination of equations give me this result.?

[aamirlockhat-clegg]

question 8 is wrong as the question is in degrees not radian