2003 (1 Viewer)

[Dreamerish*~]

Could some please confirm that the answer to question 7 (b)(iv) is 4 pi?

Even better, if someone knows where I can find answers to past HSC mathematics and extension I papers, could they please post it up to prevent me from making another 6372846382 confirmation-of-answer threads in future?

 

[acmilan]

You split the integral:

Integrate v from 0 to pi/3 and take the absolute value
Integrate v from pi/3 to pi
Then add the two

Ill calculate and edit my post with my answer

edit: I get 4sqrt(3) + 2pi/3

Answers to 2003 can be found here: http://www.boredofstudies.org/courses/maths/2u/2003_Mathematics_HSC_Sol_Jeff_Geha.pdf

Apparantly some answers arent right though.