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What do you reckon a 72/84 will align to?

I thought this years paper was pretty challenging... Im looking at about 70-72/84 what about you?

Heya this is all good, except for the first part... i don't think assuming that AB=AC and going from there is a valid proof, the proper proof is AB:AD = 1:2, and AC:AE = 1:2, and angle[DAE] is shared. therefore, triangles ABC and ADE are similar (two pairs of sides in proportion, with included...

hey for the last part of Q10, for the proof, i wrote since 0< theta < 2pi, ... then went on to prove what it asked but i looked at the question and it says "explain", so will i lose a mark? is my working out sufficient?

i used 3 and 0.5, but at the end i wrote 'million'

its meant to be 109 not 119... edit: oo sorry i didnt see ur post after !

YESS, time for celebratory smoke. saved my heart there sinsolja

mate come on, you have to say 'for all positive integer n>=x' -1 for you

sorry man... you won't get the mark :( did you remember to label the asymptote in Q7 b) v)?

hahaha the 2u cohort would feel the same about 3u people!

it doesnt work... :( the percentage increase isn't linear

Post your estimate mark here, so we can get a good idea of how people found the test! I'll start, 110/120 :D!

i said it equalled 2 rad., and underneath =114' 35'

seems legit

weeeee

Re: lol i thing i got state ranking for 2unit what would be minimum raw /120 for state rank anyway :(?

heya yeah.. my brother just explained it to me, the percentage increase is always changing, so you were meant to calculate L2 - L1 = 6.93 for all values of I FUCK!!! hahaha i also calculated ratio instead of difference, but at least 1 out of 2 marks hopefully (:

oh foot nuts! i just realised i got all the working out BUT, i concluded that "therefore, when intensity is doubled, loudness increases by x1.077" IE L2/L1 = 1.077 i realised that 1.077 x 90 = 6.93, so wrong or right?

,.. i don't understand your working out.. i let L2=10ln(2I*10^12), and L1=10ln(I*10^12)... got a percentage increase of about 7.7 percent?

are you sure thats right???