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hi.. im having trouble proving this identity.. if the tangent to the ellipse at P and the tangent to the circle at R are CONCURRENT with the right hand directrix of the ellipse, show that sec @ = 2/e where e is the eccentricity of the ellipse ellipse = x^2/a^2 + y^2/b^2 =1 circle =...

Hey VDS.. Go easy on the question. This is a simple one to start off with.. a) sketch the required graph. b) the question says bounded by y=4 and x=2.. c) draw those lines and you see a dodgy triangle.. your actually rotating that crap d) take small strips with change of dy e) now your...

Hi there, your question regarding cylindrical shells... Your better off knowing how to derive the formula then remember.. just like what the guy above me did.. that method is just crap Eg pi S 2xy ... this only applies to some.. if u look at to graphs getting rotated you wont be able to...

Re: 回复: Re: Mathematics Extension 1 HSC Trial Thread yeah this rule is pretty good.. but i would recommend you to just sub really really small numbers in to your calculator or big number depending on the questions.. ive been doing this and its been working as a charm.. but know how to...

hey buddy use this rule f'(x)/f(x) = ln{f(x)} here ill show u the steps.. S sinx/1+ cos x we can see that 1+cosx when you find d/dx it gives us -sinx therefore -S - sinx/1+cosx follows that rule i just gave you... = -ln(1+cosx ) there is another way where you can use...

nice desktops

i would think the guy is a girl... he has a pussy and a vagina.

go to the mcdonalds website if i were yoou.. you screwd up your life.. you might aswell get a job at macs or KFC. that shit is low man.

has any one experienced masturbation problem.. our penis dont ejcaculate ?? need tips to make our penis ejcaculate.

0 ..

hmm according to my calculation, and my 12 years worth of EDUMACTION !!! I would say your UIA is approx 96.69.

it was bought from some organisation.. independent. somet shit like that..

sydney high.. thats the plan isn't it...

sounds like home work.. cant be stuffed.

looking at 99.xx +

death shall appraoch china.

sydney high kid.. thats from the resource page.

Re: Trials Thoughts xD hahahahah i finished mine today.. economics raped me yahhh... i hate protection.

yes ive done them all.. i need more.. im hungry.. i dont like the HSC papers.. i need past/hard trial papers.

thats still screwd up shit man.