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STEP Prep Thread 2016 (Mark. II)

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Original post by jjsnyder
How do I integrate arcsinh(x)

EDIT: it's okay I'm a genius I got it, how are you supposed to do it though?

EDIT^2: Reality kicked in, I'm not a genius, I didn't get it :frown:
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Maybe by parts?


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Reply 961
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ox2015
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Hey, since the compiler isn't really working.. anyone happen to have a copy of the hacks and tricks page screenshotted? Thanks. 12 hours left!
Anyone else not doing STEP I?
Original post by physicsmaths
Maybe by parts?


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Eh? arcsinh(x) = arc + sinh(x)?


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Reply 964
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Zacken
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Original post by sweeneyrod
Anyone else not doing STEP I?


There's always Krollo. :tongue:
Reply 965
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Zacken
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Original post by jjsnyder
Eh? arcsinh(x) = arc + sinh(x)?


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How do you integrate ln x? Same trick.
Original post by Zacken
How do you integrate ln x? Same trick.


Ohh okay, thanks :smile:


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Zacken
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Original post by Geraer100
Okay, thankks! and before you said even integral for point 6, by even integral do you mean an integral with limits a and -a?


Yep.
Original post by Zacken
Yep.

Thanks!
Reply 969
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Zacken
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Original post by jjsnyder
Ohh okay, thanks :smile:


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(same goes for integrating all the other ar(c)trig(h) functions iirc)
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Zacken
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Original post by ox2015
Hey, since the compiler isn't really working.. anyone happen to have a copy of the hacks and tricks page screenshotted? Thanks. 12 hours left!


I don't think anybody is going to have that, unfortunately. You could try copy-pasting the LaTeX code from the post into another latex compiler and checking it out?

...more effort than it's worth to be honest. :tongue:
Reply 971
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ox2015
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Original post by Zacken
I don't think anybody is going to have that, unfortunately. You could try copy-pasting the LaTeX code from the post into another latex compiler and checking it out?

...more effort than it's worth to be honest. :tongue:



alright, thanks anyways
One thing, tomorrow, when the exam finishes, is everyone going to comment in this thread or will there be another thread? And can we comment immediately after the exam or we got to wait?
Original post by Geraer100
One thing, tomorrow, when the exam finishes, is everyone going to comment in this thread or will there be another thread? And can we comment immediately after the exam or we got to wait?


Wait till 9am 15th.


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Original post by physicsmaths
Wait till 9am 15th.


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Ah okay, it's because I never wanna see the answers after the finishing the exam.
Original post by jjsnyder
Ohh okay, thanks :smile:


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It's arcsinhx, so you'd expect that the same trick you use for arcsinx might work.
Reply 976
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Zacken
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Reminder that no discussion about the exam should take place until 24 hours after the exam has been sat.
Q1, STEP I 2014,

The last part, I don't see how it's linked to the previous parts, Part v talks about two prime numbers pq but 675=5^3*3^4 and 5^3 and 3^4 are not prime numbers. So how can the previous parts be applied? So why there are factorising 675 into that form gives 6 factors pairs?:smile:
Original post by Geraer100
Q1, STEP I 2014,

The last part, I don't see how it's linked to the previous parts, Part v talks about two prime numbers pq but 675=5^3*3^4 and 5^3 and 3^4 are not prime numbers. So how can the previous parts be applied? So why there are factorising 675 into that form gives 6 factors pairs?:smile:


There are quite a few unrelated parts in that question, it's kinda silly yeah.
how u feeling @Zacken

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