Recent content by shakaman2

Yes sorry the (...)^2 should be before the n \quad (x_1+...x_n)^2 /n \geq (x^2_1+...x^2_n)/n \quad \forall x_i \geq 0 \; Which I get from (a^2+b^2) \geq (a+b)^2 But when I try to edit I get: The following error occurred: Your content can not be submitted. This is likely because your...

Homework Statement Reading Feynman The Principle of Least Action out of The Feynman Lectures on Physics, Vol 2. Link to text http://www.feynmanlectures.caltech.edu/II_19.html So I'm having a problem proving that, section 19-2 5th paragraf, that "Now the mean square of something that deviates...