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# STEP Prep Thread 2016 (Mark. II) Watch

1. (Original post by Vesniep)
Did you study analysis at least a little bit ? I mean I have that problem of rigour because in my school we study analysis and rigour is our god (if we are to solve a dif equation we should consider continuity differentiability etc so that we get all solutions) and our book is full of proofs ( 3 quarters proofs 1 quarter questions about proofs lol ) so I guess that's why I have that problem .
I did study very rigorous calculus from a textbook (not finished though, will finish over summer) so that's one of the reasons. But generally I like to be very technically precise as that is what's required in maths as a whole.
2. For 1,2007 question 7, how did they jump from the second to last line to the last line?

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3. (Original post by Vesniep)
Did you study analysis at least a little bit ? I mean I have that problem of rigour because in my school we study analysis and rigour is our god (if we are to solve a dif equation we should consider continuity differentiability etc so that we get all solutions) and our book is full of proofs ( 3 quarters proofs 1 quarter questions about proofs lol ) so I guess that's why I have that problem .
Lots of STEPers have probably looked at some analysis, but it's definitely not on the A-level syllabus. I think most A-level Maths students probably think of formulas for differentiation etc. as magical rules that they can't know the origin of. The nearest my class got to rigour was "well the chain rule isn't quite cancelling dx and du, but we'll pretend it is".
4. (Original post by Glavien)
For 1,2007 question 7, how did they jump from the second to last line to the last line?

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I haven't read the question but isn't D the length of P1P2 ?
the length of a vector (a,b,c) is sqrt(a^2+b^2+c^2) ....
5. (Original post by Vesniep)
I haven't read the question but isn't D the length of P1P2 ?
the length of a vector (a,b,c) is sqrt(a^2+b^2+c^2) ....
Yeah but in the picture, how did they jump from the second to last line to the last line?
6. (Original post by Glavien)
Yeah but in the picture, how did they jump from the second to last line to the last line?
second to third line : what I said in previous comment
third to last : algebra ... expand your expression so that you reach the printed result
where's the problem I don't get it ?
7. (Original post by Vesniep)
second to third line : what I said in previous comment
third to last : algebra ... expand your expression so that you reach the printed result
where's the problem I don't get it ?

For the third to last line how do you factorize once you've expanded out?
8. (Original post by Glavien)
For the third to last line how do you factorize once you've expanded out?
That's printed on the paper , if you want you can expand the result and get the same terms so that you can deduce they are equal .
9. (Original post by Vesniep)
That's printed on the paper , if you want you can expand the result and get the same terms so that you can deduce they are equal .
Ohh, thanks for that!
10. Has anyone here done Q8 from III 2014? I feel like that question was so awesome the next step is literally just bending spoons with ur mind.
11. (Original post by EnglishMuon)
Has anyone here done Q8 from III 2014? I feel like that question was so awesome the next step is literally just bending spoons with ur mind.
Did it last question in my mock.
12. (Original post by EricPiphany)
Did it last question in my mock.
nice, same with me. The ideas seemed simple but the last part was satisfying how did ur mock go?
13. (Original post by EnglishMuon)
nice, same with me. The ideas seemed simple but the last part was satisfying how did ur mock go?
Hard to say. I wrote something about it when I did it, can't be bothered looking for it.

BTW Question 10 on that paper. I haven't checked I did it correctly yet, but I loved it.

But I woke up today having lost the ability to do any STEP questions. poor me.
14. (Original post by EnglishMuon)
nice, same with me. The ideas seemed simple but the last part was satisfying how did ur mock go?
http://www.thestudentroom.co.uk/show...&postcount=282
Not so hard to find.
15. (Original post by EricPiphany)
Hard to say. I wrote something about it when I did it, can't be bothered looking for it.

BTW Question 10 on that paper. I haven't checked I did it correctly yet, but I loved it.

But I woke up today having lost the ability to do any STEP questions. poor me.
haha. yeah I did q 10 in my mock too, probably one of only mech ones Ive done during one. but yeah it was nice to have an easy to draw situation followed by some standard pure stuff
16. (Original post by EnglishMuon)
haha. yeah I did q 10 in my mock too, probably one of only mech ones Ive done during one. but yeah it was nice to have an easy to draw situation followed by some standard pure stuff
Spoiler:
Show
Did the argument from the irrationality of sqrt(3)? I've just checked the mark scheme and it was the way to go. just loved that.
17. (Original post by EricPiphany)
Spoiler:
Show
Did the argument from the irrationality of sqrt(3)? I've just checked the mark scheme and it was the way to go. just loved that.
Oh yea I forgot about that, that was great!
18. How many marks do you think I would get for establishing the first two inequalities on STEP II 2012 Q9?
19. (Original post by 16Characters....)
How many marks do you think I would get for establishing the first two inequalities on STEP II 2012 Q9?
12 or so.

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20. (Original post by Krollo)
12 or so.

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Merci.

Anyone else done II 2012. If so, what did you think about it?

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