Recent content by JoshMaths

Sorry about that. Didn't come up in the test so I am all good.

http://imgur.com/LAOgGyY http://imgur.com/LAOgGyY I know the components of R2 as in ESS, TSS, RSS. I know cov(x,y) = [\sum(yi - ybar)(xi - xbar)]/n-1 But that's as far as I can go, I have come across lowercase r yet or the sample correlation and proofing how they all fit is a bit beyond...

Thanks

No this is not homework. http://imgur.com/zAZxmuC http://imgur.com/zAZxmuC Ok i am struggling to even start this question. I see it has a constraint so i would be tempted to use Lagrangian but from there i don't see how px and qy fit into it? Some assistance on the tools needed to...

Thanks for your help, i'll try and post more relevant questions next time.

Nearly all my Economics questions have gone unanswered, if i am missing something huge in terms of my poor question asking please let me know.

Thanks, one constraint i might have forgot to mention is that all the pages must be vertical so you can read them.

I am going to feel silly when you guys give me the answer in 2 seconds but here we go. Imagine there are 16 rectangular pieces of paper with length 2 and width 1. You want to organise them in a big square or make them fit the smallest area possible. How many columns do you have and how...

Yeah it was hard to found but i have found one now ;) This place is still awesome for maths questions though.

Ah so for fy(x,y) = 0 the solutions would be (0,y) and (x,2) as you can have any value for x and y for respective values that make the partial derivative zero? Thanks for your help.

Nope, incorrect assumption :) The notes i am provided from the lecture have made this leap themselves. Would you like a picture of the notes?

When deriving the natural level of output i am confused as to how the leap is made in the last two lines. P = P(1+μ)F(1-Y/L,z) => 1 = (1+μ)F(1-Y/L,z) => Yn = h(μ,L,z) I understand how the mark-up, Total Labour and variable factors are the factors of the natural level but how does...

Hi D H thanks for the reply, i am sure you have helped me in the past, i remember the name. I assumed that since it was in the Economics section people would be familiar with utility functions and the like, same way when you see an integral or power series you know it without someone having to...

Wow, viewed nearly 500 times and no answers or help? Maybe this is why we need an Economics forum...

Hi, So f(x,y) = xe-x(y2 - 4y) Find all stationary points and classify them i got for fx(x,y) s.p (1,4),(1,0) for fy (x,y) s.p (0,2) I thought that you don't need double differentials at this stage and if it is a s.p it must satisfy for fx(x0,y0) = 0 for fy (x0,y0) = 0 which...