Search results

24c 11. from fitz need help P is a variable point on the parabola x2=-4y. The tangent from P cuts the parabola x2=4y at Q and R. Show that 3x2=4y is the equation of the locus of the mid-point of the chord RQ. doesn't look hard...just cant figure out the first steps

(a) It is estimated that 85% of students in Australia own a mobile phone. (i) Two students are selected at random. What is the probability that neither 2 of them owns a mobile phone? i think that the answer is <2.25% but i just put 2.25%

root2S-S?

i left early finished the whole thing well with 1 hour+ to go so i just checked the whole paper again and then left with like 15 mintues left, but lots of peeople left with 30+ left

What do u think u got? i think i got 119 edit:118 i realised for the zooming in one, u had to write how many times it zoomed in? i just wrote n=13 so i guess 1 mark off edit: maybe 116 at worst,118 at best

if they ask you to integrate something with ln x and dont mention that u hav to change the subject to x and then do it that way, can u just do primitive of ln x is xln x -x? and then do it, it'll b a lot faster and safer.

Well, i'm still not tooo sure about this like splitting it up or just subtracting the 2 curves from each other? especially when like it goes to the negative part of the graph? like if u have to find the negative parts separately? or what? and like rotation!!! u always have to split that if its...

does anyone have this, and is it good or not? what does it exactly have?

if the roots of the equation x^3+3x^2-2x+1=0 are a,b,c, find the value of a)a^2(b+c)+b^2(a+c)+c^2(a+b)

cos2 x=2cos2 (x/2) from 0 to 360 degrees

by considering the geometrical significance of (2^x - 1)/x to the graph of y = 2^x, find: lim (N^x-1)/x x-->0

What do you do in reading time? just do the first few questions or maybe look at the last ones? or just skim through randomly picking a question and doing it until the reading time is over.

its funny

lol

i'm just wondering if i should try to teach myself 4unit maths in the holidays or should i just wait to do it at school, i sorta just want a bit of a headstart

i'm doing advanced english at the moment, i'm not doing too badly but i just wanna do better but my english skills are really really bad, in basically every aspect. The only way i do well in exams is basically if i memorize watever i'm doing but i cant even write something good to memorize. Is...

for yr 11, i'm pretty sure i've used at least 5or 6 A4 96 page books

what mark do ppl usually get for the HSC maths exam (as in the tops marks that ppl get each year)