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#100437 integration question

Posted by madman69 on 17 October 2007 - 04:32 PM in Mathematics

An easier substitution would be x=u^2. While using tan^2 x is more intuitive, it wastes a lot of effort since you have to substitute twice to get it in to a form where you can integrate to obtain a tan^(-1) function.



#100056 Grade Boundaries?

Posted by madman69 on 08 August 2007 - 09:12 AM in Exam Results 2007

Some statistics have already been published (including grade boundaries), have a look at this page:

http://www.sqa.org.uk/sqa/26543.html