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Genius... thanks dude.

KFunk Rules Well explained. Makes PERFECT sense in my mind. Thank you VERY much!

Could you explain your logic please? ³⁰P₁₅ ---> why ? /15 ---> Because its a circle!? so ?

I don't get it... i) How the **** does 'h' come into it ? ii) How is R²-r²=b² ? I can integrate it after that, so no need to integrate it for me. Thanks in advance

I'd say complex numbers would be easier, but probably longer. In an exam I'd do it with complex numbers, just to be on the safe side.

Nice method. I probably would of done it via De Moivres though.

If each table seats 3 on the long side I would of thought that the tables would seat 8 people: .... _1__2__3 8 {________}4 ..... 7 .. 6.. 5

LOL - you've done all past papers back to 1982...? wow. . . . .

OH MY GOODNESS.... I just drew the 2 fken circles and the answer was jumping at me; almost poked me in the frigin eye ffs! *sigh*... feel free to laugh. Thanks haboozin! :D

LOL, 283 views and counting! :P

Circle1: (x-3)^2 + (y+2)^2 = 2 --- & Circle2: x^2 = (y-2)^2 = k --- @ Add 2 to b.s. of @ and make it equal to 2. now, solve simultaneously... after solving simultaneously i get: k= 6x - 4y + 5 Is that correct thus far? Where do we go next?

Ah yes. I missed that part of the question. Thanks.

This is a 4u question by the way, so don't freak out. :)

What the? I got an infinite amount of solutions! :S I'm imagining 2 circles: 1. Center: (3,2) & Radius: 2 2. Center: (0,2) & Radius: k k could be anything though.... so couldn't circle 2 meet circle 1 at infinite places?

If the HSC wasn't so g4y, I'd be doing 4u English too. It rockz0rs! :P But seriously, I was doing it but I can't be [insert french word here].

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Good work. Care to explain your reasoning?

Gotcha! That was the idea ;)

True, but I was just joking man! :D

Anybody know how to do this? :P