1. The problem statement, all variables and given/known data A damped oscillator has a displacement x as a function of time t given by x = e-t cos(∏t). Find the time at which the displacement is a maximum, when it is a minimum, and also nd the time when x is a point of inflection. 2. Relevant equations x = e-t cos(∏t) 3. The attempt at a solution I've no problem differentiating the equation, its when I come to finding the value of T that I am having trouble with. Please see the attachment.