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Maths Extension 2 Predictions/Thoughts (3 Viewers)

Trebla

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@Trebla can you explain 15.a)ii)
When you handle the double angle with a substitution your limits would change from 0 to pi. However, note that integrating a sine function (and subsequently it’s powers) from 0 to pi is the same as twice that from 0 to pi/2 by symmetry (see the graph). You can show this algebraically but that’s the rough idea of it.

That’s why it’s 4 marks because of those extra steps.
 

scaryshark09

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what did you get for question 6,7,8,9,10 mc
 

=)(=

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lowkey i spent so much time on 15ii and still didnt get it out and didn't even get iii out
I barely had time to do 16 aii and iii and c such a bloody bummer
 

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