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Re: HSC 2012 Marathon :) CAN somebody please check my aproach for Sy123's question part (v) i subbed the equation of normal in equation of the semicircle (function) making a quadratic equation in x...since it only touches the curve, i made the discriminant=0 but it gave me answers of...

they'll just typically ask you equations of tangents, normals, chords....and then the locus of a midpoint of intersection tangents or normals which just involves playing with their co-ordinates and/or also make use of previously proven condition eg pq=1,2,3....that should be it!

if you just use them directly, u cant lose marks can u?

looks hard..

bump

what would be the ideal amount of time i should spend on each question, so i get the chance to attempt every question on monday MCQ Q11 Q12 Q13 Q14 Q15 Q16 Edit- also what should i spent my reading time on??

i was doing this mechanics question and they had kepler's law in it!

Meissner Effect

study! and also try to be ahead of your school for every subject- it will help A LOT

angle= 0 degrees.... your x(dot)=Vcos0= V do you get it?

whats ITT?

square the whole function you end up with a^2x + 2 + a^-2x which is the same as 2 + f(2x) , since you are replacing x with 2x in the original function

he typped up wrong answer then he editted it when i told him about the trick

no worries man....thanks for detailed explanation! i got it now...

thats right! and what you had previously done is 4 groups of 3!

mate it says 3 groups of four, not four groups of three....u got tricked!!

In how many ways can a group of twelve people be divided into three groups of four to play with each other?? Explanation will be appreciated...thanks!

i am going india!! for DIWALI....yohoo

i cant do any question of Q8.....achieving a high mark gets so difficult then :eek:

its not new syllabus! its just different layout which makes no difference!