2014 HSC Extension 2 Maths Carrotsticks' Solutions (1 Viewer)

iStudent

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Carrot how did you get the mx2 paper so quickly? (curious). Do you have like a special network of students who provide you with the paper the minute the finish or something? xD
 

Trebla

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To be fair 'reverse quotient rule' isn't actually a thing. It's more of a trickier 'inspection' approach of the integration by parts method.
 

mirachael

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For the argand diagram question I didn't explicitlywrite that the angle was pi/4 but I did show that the boundary lines passed through (1,1) and (1,-1). Is that alright?
Also how pedantic do you think they'll be about the graphing question afterwards (x^2-1/x^2)? Will they deduct marks if the line isn't neat, but you have the general shape and intercepts?
 

Carrotsticks

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That is sufficient.

Regarding how pedantic they are, you should still be awarded full marks (unless so messy that it demonstrates a false property) because it is in question 11 after all, and not worth too many marks.
 

Carrotsticks

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Hey Carrot, how do you insert your pictures from Word into a Latex file?
The file isn't a TeX file.

But to TeX editing programs have an image embedding function where you 'attach' an image file (ie: .png) to the main document file and it lies in the same folder where everything else is.
 
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FrankXie

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The last integral is an application of integration by parts, though it is sophiscated because u and v must be carefully chosen.
v = -(ln x + 1)^{-1}, u=x\ln{x}.
 

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