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as part of an assessment task, this is one of the questions- the base of a solid is the region bounded by the curve y^2=4x and the lines y= -x and x=4. find the volume of the solid if every cross section perpendicular to the axis is a square having a side with one end point on the line y= -x...

in the shells method by nightweaver, he chose the bigger radius as y+delta y...but i chose y+delta y+2 since it is elevated by 2...am i wrong??? also for smaller radius he chose y where as i chose y+2...any difference?

lol he is in my class! we are both idiots!

i dont get it wat do u mean the two roots?

find the volume when the circle x^2 + (y-4)^2=4 is revolved about the x-axis....can anyone show complete worked solutions...i am finding it tough to do!

people who have done the test in the morning- can they give us an idea of the questions?

i got 38/48 in practice section 1..is that good?

yeh i know but how about approximates from past results like statistics etc..u know

can anyone give me approximates on each section raw mark that would be enough for 95th percentile! thanks section 1- ?/48 section 2- ?/44 section 3- ?/42 thanks!

i dont know how several people could estimate atar quite accurately...i wanna learn it! but i cant answer your question sorry!

can anyone help me with this question please? find the equations of two tangents to the ellipse 16x^2 + 25y^2= 400 which are parallel to the line y=x+2 thanks i found the condition that tan(theta)= -4/5 i cant go further some pleease show me the steps..

24/7??? like for whole week???

nah i have changed my mind..ill write my own send it to my teacher for feedback and then improve it

at our school, only one teacher marks the advanced tests and i used it in half-yearlies and nothin happened..and i already mentioned our headteacher recommended that book and rip off the ideas LOL

but how will they knw???

is it allowed or not?

its illegal??? bro our headteacher recommended that book (stories of belonging or something like that) and said u can rip the ideas off it..

i have as you like it excel guide and it has an 'A' range creative piece..can i use it in my trials or it is not allowed????

Firstly, i am new recruit..Secondly, whenever i click on the upload resource link, nothin happens...so its not entirely my fault..the site is still not working today!