Mathematics Extension 1 Exam Predictions/Thoughts (3 Viewers)

jerry.huang999999

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Wait what. I got 15 for binomials ... must’ve messed up something! Faaaaaa
i actually
get k=14 bc k=15 is for k+1, i just checked by demosScreenshot_20191104_174537.jpg where is coefficient of x^k+1 and x^k ,since k is 15 and another one is 14 , k should be 14 to satisfy the coefficient.
 

mkennedy84

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I also got B, cuz I thought that there were 2 branches, right????
The graph i have above, in red is y=-sqrt1+sqrt(1+x)the green is y=x and the blue one is y=x^4-2x^2. Regardless of whether there are two branches in the graph given, the original function only exists if x>-1, and in order for the inverse graph to show symmetry about y=x, the x<-1 is the inverse part function
 

flowerp

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The graph i have above, in red is y=-sqrt1+sqrt(1+x)the green is y=x and the blue one is y=x^4-2x^2. Regardless of whether there are two branches in the graph given, the original function only exists if x>-1, and in order for the inverse graph to show symmetry about y=x, the x<-1 is the inverse part function
I see, my bad .... thank you for the clarification!
 

Arrowshaft

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Yeah how much is would they penalise for getting an inverse tan fun function for the integral instead?
 

Idkwhattoput

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I made one silly mistake in the entire exam after checking every single question rigorously, but this is the only one that somehow slipped my mind. For some reason I didn't consider the equation of the function and just assumed the blue graph was the inverse (which I realise is wrong for many reasons). Of all the things I could've lost a mark to, it had to be multiple choice.
 

psmao

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I made one silly mistake in the entire exam after checking every single question rigorously, but this is the only one that somehow slipped my mind. For some reason I didn't consider the equation of the function and just assumed the blue graph was the inverse (which I realise is wrong for many reasons). Of all the things I could've lost a mark to, it had to be multiple choice.
I legit got the same mistake and this is the only mistake I made lol. I had the same feeling and checked everything except “forms part of “
 

Idkwhattoput

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I legit got the same mistake and this is the only mistake I made lol. I had the same feeling and checked everything except “forms part of “
What are the chances of a 69 aligning to 100? I mean I know the 100 definitely won't be a state rank, but I know that once a 99 aligned to 100 (seen in raw marks database)
 

Idkwhattoput

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do I lose marks for not having exact value but instead decimal value of this, it didnt ask for exact value
I think for 'applications to the real world', decimal values are fine. But this is my opinion not knowledge of how HSC markers think
 

Arrowshaft

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I legit feel like killing myself right now, I completely screwed myself over with my silly mistakes. I got 99 in trials and was confident in 3U but only ended up getting 3 hours sleep today because of anxiety, and I now I screwed over the exam with way more silly mistakes than I would’ve though. I’m really sad because 3U was the test I thought I’d smash. Stuff my life man, I feel too depressed
 

psmao

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I legit feel like killing myself right now, I completely screwed myself over with my silly mistakes. I got 99 in trials and was confident in 3U but only ended up getting 3 hours sleep today because of anxiety, and I now I screwed over the exam with way more silly mistakes than I would’ve though. I’m really sad because 3U was the test I thought I’d smash. Stuff my life man, I feel too depressed
I played leagues the night before exams and the feeling of angry because of trash team totally made me forget the anxiety of the exams LoL
 

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