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Im stuck again, in this question u have to find the intersection (point R) of the normals at points P(2ap,ap^2) and Q(2aq,aq^2) for finding the y coordinate ive got: py = 2ap + ap^3 + apq(p+q).... and if i divide by p i get the solution.... P can be zero, cant it? therefore, why can we divide...

ok i see, thanks for your help

This may sound stupid but im puzzled with this: at = at^3 + 2at (this is to do with parametrics+ parabola btw), are we allowed to divide both sides by at??? if not, why not? i tried dividing both sides by a and then minusing both sides by t and this gave me the correct answer, But how come wen i...

just one query... the part which screwed me was the fact that point Q was fixed so i didnt write it as a parametric equation, does ur solution still apply?

dude, u are the best thanks heaps

this question is really pissing me off, any help would be much appreciated: Through the vertex A of a parabola, chords AP and AQ are drawn at right angles to one another. Show that for all positions of P, PQ cuts the axis of the parabola in a fixed point K What i did was assume the parabola...

so are we allowed to make those assumptions in induction? are we allowed to divide it into two cases? thanks for the help btw

prove, by induction, that n^2 - 11n + 30 >=0 for n>= 1 tried everything, no hope. thanks in advance

If you wrote 9/400 would u get full marks or did u have to write 2.25%?

ahhhhhhhhhhhhhhhhhhhhh fukkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk fuk fuk fuk shit i put my heart into that q and i fkd it up but still i proved it was min by showuin second deriviative is greater than zedro wat can i get outa 3?

LOL i meant was the answer to 10b sqrt (1/2) or sqrt (L/2)

was the answer to 10b sqrt (1/2) or sqrt (I/2)

d) has no relatiion with a - b and the first part of d): as n ---> infinity x_1 gets closer and closer to x_0 which is 1. therefore p ---> 1 But i dont get the secnd part

Ahhhhhhhhhhhhhhhhhhhhhhhhhh!!!!!!!!!!!!!!! @#$# My Bloody Calculator Flunked Out At This Moment I Hate The New Ones

sorry... typo... i meant next week

Im doing it next year ... im an accelerant

q 10 d) the second part http://www.kewpid.net/exams/JR_Trial_2003_2U.pdf keep getting an answer of zero ???

im lost... does a^x even touch loga (base a) x??? do both tese graphs even touch y = x???

The mother of all q 10's is the pulley one in 2003.....................I hate that q

So wat can i expect to get then with my raw mark my ranking of 4th and a predicted 95% in the hsc