Recent content by GBR

Homework Statement After todays exams, I'm having a few well deserved beers with a friend. We are pondering about some things we're not competent enough to comprehend (I'm a journalist and he is an architect). 1. e = m*c² -- how does lightspeed come into this equation, and why is it squared...

Homework Statement Use an epsilon-delta proof to show that f(x) = sqrt(x) is continuous in x = 4.Homework Equations The Attempt at a Solution |f(x) - f(4)| = |sqrt(x) - sqrt(4)| < ε = |x-4| < ε² And now what? I'm not even sure I'm on the right path. My biggest problem during...