Discover Questions

Would it be possible to use electrodes attached to someone s head to make them see a video transmitting from a computer? How to grow my brain? How do I enable? or re-enable? I need to get an ultrasound not because I'm having a baby but I have a lump on my chest. about much are they? I hope not as much as an MRI? In Algebra, if an eigenvalue of a matrix A is 3 and 5, what is the eigenvalue of matrix A^(-2)?