Recent content by Rabolisk

Hello I have a worked example where I have to maximize a function with an inequality constraint. The problem is worked out below. https://zgqqmw.sn2.livefilestore.com/y1pLc13HVWpA9dATZEzikySeSMBN2hn1mJCw71rJ5vvUJcr9W7KBPFkOz7HQEppa6EPbLi5yyAwDagh3ezF_7eyVL6tBK7q6ise/maxProbem.png?psid=1 I...

Hey. Iam trying to understand how specification of the equation can lead to hetroscedasticity. This is stright out of my notes. Yt=B1+B2x2t+B3x3t+...+BkXkt+\gamma\varpi+ε^{}_{t} Yt=B1+B2x2t+B3x3t+...+Bkxkt+ε^{*}_{t} where ε^{*}_{t} = εt + \gamma\varpit Since Var(εt) =...

Can someone explain to me how Cov(x,y)=[X-E(x))(Y-E(y)] and this would equal 0 under the normal OLS assumption. I know how to calculate the covariance, but X here is a matrix. So I don't understand the logic of this formula...

Homework Statement I have to determine if [e][/x] is a convex function. If it is then show proof. I know its a convex function by looking at the graph, Iam stuck at prooving it mathematically though. Homework Equations The function is f(x)=e^x. The Attempt at a Solution I am...

If you plug in a high speed device your pc should say if its not a high speed one. If it says nothing then it is high speed.