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a=8e^{-2t}+3e^{-t}\\\\\frac{dv}{dt}=8e^{-2t}+3e^{-t}\\\\\int dv = \int 8e^{-2t}+3e^{-t} dt\\\\v=\frac{8e^{-2t}}{-2}+\frac{3e^{-t}}{-1}+c_1\\\\v =-4e^{-2t}-3e^{-t}+ c_1\\\\$Initially: $t=0$, $v=-6\\\\\therefore-6=-4-3+c_1\\\\c_1=1\\\\\therefore...

1)I_n=\int_0^a(a^2-x^2)^ndx\\\\u=(a^2-x^2)^n\implies du=-2nx(a^2-x^2)^{n-1}dx\\\\dv=dx\implies v=x\\\\I_n=[x(a^2-x^2)]^a_0-\int_0^a-2nx^2(a^2-x^2)^{n-1}dx\\\\=2n\int_0^ax^2(a^2-x^2)^{n-1}dx\\\\$Now with a little...

i think you should note that this is under "mathematics" :) but yes basically what D94 said.

Differentiate the curve, make it equal to 6 (since it is parallel) and solve for x

ok cool thanks

ok, what i did was found that g'(0) exists which shows it is differentiable. Then to show it was continuously differentiable I showed that g\:'(0)=\lim_{x\rightarrow 0^-}g\:'(x)=\lim_{x\rightarrow 0^+}g\:'(x) Is that wrong? :S

oh that question, i think i have to redo my q2 after thinking about it today but someone told me that differentiable is when the g'(x) limit at x=0 exists and continuously differentiable is when \lim_{x\rightarrow 0^-}g\:'(x)=\lim_{x\rightarrow 0^+}g\:'(x) so yeh i basically did working out for...

ok thanks, i got a little confused there for a moment :S

Ok so if the question is: Perilloux, Easton, and Buss (2012) investigated sex differences in the perception of sexual interest and claim to have found support for a short‐term mating strategy in men with evolutionary origins. Are their claims and conclusions justified by their findings...

Ok so here's my advice after just skimming through your essay: 1) If you're going to introduce another text (Cell Block Tango), introduce it in your opening paragraph and have a thesis which specifies the ideas which are explored in both your texts (and answers the question directly). 2) I'm...

Re: Semester 1 USYD Chatter Thread I have exams on Monday 18 June - Thursday 21 June then last exam on Tuesday 26 June. More time to study for physics i guess :P...

Ok then :)

i'm doing that one too! XD just wondering, is it ok if our sources are just mainly peer reviewed journals or should we have other publications as well? and how can we find other sources besides using psychINFO?

what is the whole question for part c? it's incomplete...

haha i do MATH1901 too and i feel the same way X)...

it was one of the words that you needed to find an anagram for LOL

Saw my username in the Jumble section in the mX today, ha.

I've started reviewing the starter reference for the essay topic but i haven't done psych essay and yeh i hate essays as well

No, this is not allowed. You must choose a related text which is NOT in this list of prescribed texts:http://www.boardofstudies.nsw.edu.au/syllabus_hsc/pdf_doc/english-prescriptions-poster-09-14.pdf

Hi there! Welcome to BOS :D haha i did the same subjects as you for my hsc except i did standard english instead XD