STEP Prep Thread 2016

Original post by Zacken

I haven't done it. But I think I know what you're talking about, there was a pretty big fiasco because of that error.

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Reply 7982

Original post by Insight314

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Reply 7983

Original post by Zacken

I haven't done it. But I think I know what you're talking about, there was a pretty big fiasco because of that error.

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Reply 7984

Original post by Zacken

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Reply 7985

Original post by Insight314

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Okay, at this point, I'm not sure about what we're talking about and I don't want to open the question paper so gonna tag in @physicsmaths for you.

Reply 7986

ok wha!? Im just marking my III 2009 mock and on q 3, they say (in reference to evaluating a limit) "alternatively this can be obtained by de L'hopital", so this means we can get credit for L'Hopitals rule in future or...?

Reply 7987

Original post by EnglishMuon

ok wha!? Im just marking my III 2009 mock and on q 3, they say (in reference to evaluating a limit) "alternatively this can be obtained by de L'hopital", so this means we can get credit for L'Hopitals rule in future or...?

Yes, you can use L'Hopital or any other sensible mathematical technique in STEP, even if it is not on the syllabus, as long as it is not a "hence", "deduce" etc. question.

Reply 7988

Original post by EnglishMuon

ok wha!? Im just marking my III 2009 mock and on q 3, they say (in reference to evaluating a limit) "alternatively this can be obtained by de L'hopital", so this means we can get credit for L'Hopitals rule in future or...?

This is a bit of a rare occurence since evaluating the limit was pretty straightforward - but normally, no, you wouldn't get credit for it if it trivialises a question. All in all, the general consensus seems to be that using L'Hoptal in STEP is just risky and asking for trouble.

(also, L'Hopital would have taken longer than just taylor expands in that question :tongue:

)

Reply 7989

Original post by Insight314

Yes, you can use L'Hopital or any other sensible mathematical technique in STEP, even if it is not on the syllabus, as long as it is not a "hence", "deduce" etc. question.

lol ok thanks. This seems like a highly disputed thing as many people I've asked have said I shouldnt which makes sense in a way because Ill be using a more advanced technique to proof something less advanced which seems a little backwards to me, but if it is a valid way to check working/ pick a couple extra marks then thats fine with me :smile:

Original post by Zacken

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Reply 7990

Also, any ideas on how many marks I would lose for not proving

P_{n}(x)

is a polynomial of degree n for q7 on that paper?

Reply 7991

Original post by EnglishMuon

Also, any ideas on how many marks I would lose for not proving

P_{n}(x)

is a polynomial of degree n for q7 on that paper?

Ha! I asked that same question, apparently it's worth a fair bit of marks, something like 5/6. :/ I've been meaning to go back and get it done.

Reply 7992

Original post by Zacken

Ha! I asked that same question, apparently it's worth a fair bit of marks, something like 5/6. :/ I've been meaning to go back and get it done.

haha well atleast I wasnt the only one :wink:

.But yeah, the ms seemed a lot more involved than I thought it should be. I just said "it will be of degree n iff the coefficient from

-x^{2}x^{n-2}

and

2nx x^{n-1}

from the two terms in the recurrence relation dont cancel. (and true for n=0). But wasnt sure of where to go from there so moved on.

But Im pretty sure I got about 102 on that paper so fairly happy! Thanks for the help!

Reply 7993

Original post by EnglishMuon

haha well atleast I wasnt the only one :wink:

.But yeah, the ms seemed a lot more involved than I thought it should be. I just said "it will be of degree n iff the coefficient from

-x^{2}x^{n-2}

and

2nx x^{n-1}

from the two terms in the recurrence relation dont cancel. (and true for n=0). But wasnt sure of where to go from there so moved on.

Yeah, I think there's contradiction involved somewhere as well. :lol:

But Im pretty sure I got about 102 on that paper so fairly happy! Thanks for the help!

Oh wow, well done! :woo:

Reply 7994

Original post by Zacken

Yeah, I think there's contradiction involved somewhere as well. :lol:

Oh wow, well done! :woo:

Haha thanks again ! Its worth getting motivated and doing a decent paper just to see you post this guy :wink:

Reply 7995

Original post by EnglishMuon

Haha thanks again ! Its worth getting motivated and doing a decent paper just to see you post this guy :wink:

xD Strategically placed. :rofl:

Reply 7996

@physicsmaths, @Krollo

1)How many marks would I lose for not doing last part of Question 2 STEP III 2012?
2)And what about part (iii) of Question 7?
3)How many marks for the first two parts of Question 6 successfully completed?

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(edited 7 years ago)

Reply 7997

STEP III 2012 - or also known as the "2 marks off S-grade" ayy lmao

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Reply 7998

username1162972

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Original post by Insight314

@physicsmaths, @Krollo

1)How many marks would I lose for not doing last part of Question 2 STEP III 2012?
2)And what about part (iii) of Question 7?
3)How many marks for the first two parts of Question 6 successfully completed?

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Q1 Maybe 7/8
Q2 havent done Q7 on that paper will try tmmrw
Q3 are you saying upto the part of hence or further?

Reply 7999