• Interested in being a marker for this year's BoS Maths Trials?
    Let us know before 31 August, see this thread for details

HSC 2015 MX2 Integration Marathon (archive) (1 Viewer)

Status
Not open for further replies.

leehuan

Well-Known Member
Joined
May 31, 2014
Messages
5,768
Gender
Male
HSC
2015
Re: MX2 2015 Integration Marathon

My apologies. Somehow I matched that with Q2.
 

porcupinetree

not actually a porcupine
Joined
Dec 12, 2014
Messages
661
Gender
Male
HSC
2015
Re: MX2 2015 Integration Marathon















Still didn't get the correct answer. Can someone check my method?
I'm confused by this question; whenever I try and make a substitution, the boundaries become equal (usually both become 0 - this is what should have happened to you in your second last line)
 

Drsoccerball

Well-Known Member
Joined
May 28, 2014
Messages
3,647
Gender
Undisclosed
HSC
2015
Re: MX2 2015 Integration Marathon

I did partial fractions and i got the answer...
 

kawaiipotato

Well-Known Member
Joined
Apr 28, 2015
Messages
462
Gender
Undisclosed
HSC
2015
Re: MX2 2015 Integration Marathon

I'm confused by this question; whenever I try and make a substitution, the boundaries become equal (usually both become 0 - this is what should have happened to you in your second last line)
I don't see why it should be equal in my second last line, I used substituion of t = tan2x, where x = 0 and x = pi/2
 

Carrotsticks

Retired
Joined
Jun 29, 2009
Messages
9,467
Gender
Undisclosed
HSC
N/A
Re: MX2 2015 Integration Marathon

Thanks. That's quite interesting how you change the limits from 0 to infinity - it never would have occurred to me that this was even allowed, but it makes sense
You can turn the upper limit into T and then let T appraoch infinity, but it works pretty much the same way here.
 
Status
Not open for further replies.

Users Who Are Viewing This Thread (Users: 0, Guests: 1)

Top