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You get rid of it because you're given the condition a>b but in the brackets it's b^2-a^2, which is negative according to the condition

.......conical pendulum???? now i'm freaking out about whether or not i actually sat the test LOL tbh im not sure what I did. I definitely differentiated something (I think it was something from pt ii) and bsed my way through it

Best - 93/4 max (depending if my dodgy proofs get awarded any marks loool) Worst - 83/4 (catering for any sillies etc)

I'd say E3?? not sure if its low-mid-high though

http://www.projectacademy.com.au/2014_HSC_Mathematics_Ext2.pdf

Really? I think it would be a bit lower, I found this year's harder than last years! I'd say 64-65

a lot of people I talked to couldn't get the very last q out so idk, maybe it was kinda tricky? the mechanics proofs needed was just not happening...hoping to scrape some marks for attempting it haha damn SR expectation for you very real rn

^ my friend is like top 5 as well and she confirmed 9 was A

idk for B though, a = 8???? (did it just then unless i forgot how to integrate/differentiate in the span of 1 hour)

For 9 my friend checked B and she confirmed it didn't work thus A

D A B C C D B B A C (From 1-10)

I had no time to check haha

Ohhh I thought you meant solutions for specific questions haha

I got a = 3/2 (or -3/2 can't remeber) and b=+/- rt15/2

What do you want solutions for LOL

I figured out 10 and got C And I got 9 A Sent from my iPhone using Tapatalk

Dw I tried that first as well Such a mess Sent from my iPhone using Tapatalk

Haha it took me about 10 mins but I didn't want to let it go :p Sent from my iPhone using Tapatalk

You had to move it to the other side Sent from my iPhone using Tapatalk

Add one, minus one for the numerator. Then you can split it. You end up getting the original integral twice and you use IBP for the last bit so the answer is x/(1+lnx) iirc Sent from my iPhone using Tapatalk