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.
Stages of Menopause. During menopause, a woman has her last menstrual period, usually around the age of 51. This marks the end of the fertile phase in a woman's life. The time before and after this last menstrual period, during which a woman's body goes through several changes, is divided into four stages of menopause. The graph below shows the hormonal fluctuations and menopause symptoms experienced during the stages of menopause.