3) Critically damped: [math]x(t) = (A + Bt)e^{- \gamma t}[/math] This is the optimally damped case, where the damping coefficient is just large enough to completely quell the oscillations, so the oscillator returns to zero in the least amount of time possible. 4) Overdamped: [math]x(t) = Ae^{- \gamma_{1}t} + Be^{- \gamma_{2}t}[/math]
DEAR READER: A woman is considered to be in menopause once it has been one year since her last period. Once menopause begins, vaginal bleeding is not normal. Post-menopausal bleeding (PMB) can happen for many reasons. It may result from infection or injury. Non-cancerous growths such as polyps and fibroids can cause PMB. So can bleeding disorders or use of blood thinners.
Step 1. Understand that menopause is officially over when you have not had a period for one year. If you have gone 10 months without menstruating, and suddenly have a period at 11 months, you are still in menopause. Tally the period-free months all over again until they total 12.