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.
For women undergoing natural menopause, the process is gradual and is described in three stages: Perimenopause or menopause transition.. Perimenopause can begin 8 to 10 years before menopause, when the ovaries gradually produce less estrogen. It usually starts in a woman's 40s, but can start in the 30s as well.Perimenopause lasts up until menopause, the point when the ovaries stop releasing eggs.In the last 1-2 years of perimenopause, the drop in estrogen accelerates. At this stage, many women can experience menopause symptoms. Women are still having menstrual cycles during this time, and can get pregnant.erimenopause lasts up until menopause, the point when the ovaries stop releasing eggs. In the last 1-2 years of perimenopause, the drop in estrogen accelerates. At this stage, many women can experience menopause symptoms.