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cro-angel nice avatar^_^ although cant see your outlook clearly, btw, i got some dc photoes, but the avatar upload limit restricts them from being posted..what can i do i have tried kompress them but it still exceeds the size allowance>_< please help... btw, my photo after hsc^_^, (...

hope these websites would be of some help: www.worldwise.com/biodegradable.html www.ianr.unl.edu/ianr/iapc/biodegradable_polymer.htm www.wired.com/news/technology/0,1282,51871,00.html www.phy.bris.ac.uk/research/ polymers/biodegradable.html

u two are both correct... but keypad seems more correct ^_^ okay...we will see

lol i was joking previously i just guess that u might be talking about the basic program within the window yeah, paint is pretty good, it can be colurful^_^

seriously i really want to know, keypad what paint are u referring to? u mean the basic program in windows, that allows drawing?

thx maths god

no problem!:)

actually i have now got more than enough students i have to cancel some classes after the arduous uni starts...;)

it is alright hehe u were not interrupting:p

okay

not about whether it is biopolymer or artificial polmer only biodegradibility is concerned here

xiao he is talking about biodegradable polymers

alright wait for my painting nexttime

what "paint" are u talking about? :)

solution: Let x = acos@, y = bsin@ for point P, At P, dx/d@ = -acos@, dy/d@ = bcos@ therefore, dy/dx at P is dy/d@ * (1/(dx/d@)) = bcos@/(-asin@) = b/-a(tan@) Therefore the equation...

ok

yea it got tokyo

not 100% but a band6:)

GBA too?

:confused: