I've shifted your comment over to this post to keep everything on topic.

The principal argument of `z`_{2} = −1−i is always , since it lies in the 3rd quadrant as shown in the Argand diagram.

What I've missed out in the workings is the **−π +** to reflect this which probably led to a bit of confusion there.

Anyway this change will be reflected on our final cleaned-up H1/H2 maths solutions which are going to be released very very very soon!

]]>For qn 8i) i think there is a mistake i spotted.

Qouting frm the solution u gave: arg (z

Shldnt it be =- ???

Hence the next few ans are diff bcos of the ans fr arg (z

Im taking my H2 alevel maths this year so im just a random visitor to this site cos i was practicing the 2010 maths paper and was checking my ans with the solutions given here , if im wrong pls correct me thank you. ]]>

The outcome to both your questions will really depend on the marker, as I've always felt that it's more important to demonstrate your understanding of essential concepts rather than the correctness of your final answer as far as A Level Maths go.

For Q4(ii), usually it's method marks awarded for correct workings but wrong answer. However in this case it's likely something has gone awry in your working/approach but yet you've somehow obtained the 'correct' answers so .... hmmmm ...

For Q3(i), you appeared to have made a somewhat bold assumption at the start that the sequence *is* an A.P., before working backwards to 'confirm' it. So it's really up to the marker to be convinced that you've "demonstrated your understanding of the concept involved in finding the general term of the sequence".

No worries, but expanding sin 2`x` via Maclaurin would be a little more tedious though.

even our arts students are getting near full marks wts ]]>

How do you know that 73 is the max in the history of math? it seems pretty low...

]]>But technically n logically speaking, the bulk and mean of the belt curve actually lies on B. So, if A hits 85... technically people who are weaker scoring 60+ would be getting C or D... Ouch~.. And people whu gets low 50+ would be scoring S == which seems a lil too extreme...

]]>Hi thanks amber... saw your posts in the previous threads... all quality posts supported with cambridge evidence as well. Thanks a lot!

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