HSC Extension 1 Mathematics Predictions / Thoughts (1 Viewer)

Alistruggles

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Was this exam easier or harder than usual? I think I’m getting mid E3 I couldn’t do a single part of Q14 :/
 

osnola

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last q of q13 tho fml u had to test on both sides of the discontinuity
There was a super easy way to do that one: let theta = arccos(x)
cos(theta)=x
draw a right angle triangle with theta as the angle, x as adjacent, 1 as hypotenuse and sqrt(1-x^2) as opposite
then tan(arccos(x)) = tan(theta) = opposite over adjacent = sqrt(1-x^2)/x
 

black.mamba

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new syllabus so it’s hard to tell, I’m guessing similar difficulty to previous years but I wouldn’t rly know
 

Marshall17

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There was a super easy way to do that one: let theta = arccos(x)
cos(theta)=x
draw a right angle triangle with theta as the angle, x as adjacent, 1 as hypotenuse and sqrt(1-x^2) as opposite
then tan(arccos(x)) = tan(theta) = opposite over adjacent = sqrt(1-x^2)/x
How many marks was that question? I just said same derivative so differ by a constant and subbed x=1...🤢
 

shashysha

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they really chucked 3u projectile in 4u and called it a day?? also where was the stats swear half the new syllabus wasn’t touched
 

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