Recent content by heyo12

well my definition of \overline{D}(z0,r)} was that it is a set which is a closed disk?? \overline{D(z0,r)} { w: |z0 - w | < r }

let ABDE and BCGH be squares lying outside the traingle ABC. The centres of these sqaures are P & Q respecitvely, and the midpoints of the line segments AC and DH are R & S respectively. Show that the points P,Q,R,S are vertices of a square? any ideas on how to do this please? the only hint i...

How can you prove sets 1--------- how can u prove the following sets are are open, a. the left half place {z: Re z > 0 }; b. the open disk D(z0,r) for any z_0 \varepsilon C and r > 0. 2--------- a. how can u prove the following set is a closed set: _ D(z0, r) MY WORKING SO FAR...

just checking

sure. i can totally understand what you just said. and i totally support those rules. however, i don't seem to have a clue how to start this question. the only guess i can make is that it is related possibly to divergence and stoke's theorem. but this is a guess i would appreciate if you could...

a really hard one here. would appreciate help on how to do this question: a physical system is governed by the following: curl E = -\frac{\partial B}{\partial t}, div B = 0, curl B = J + \frac{\partial E}{\partial t}, div E = \rho where t = time, and time derivatives commute with \nabla...