Now let us look how to calculate average slope. Step 1: First of all we require an equation for which we want to calculate the average slope. We will write this equation in form of a function. Assume that equation is f(x) = x 2 + 2x â 1.
How Long Do Your Flashbacks Last. 1  A few minutes 29 vote(s) 60.4%. 2  A few hours 21 vote(s) 43.8%. 3  A day or so 3 vote(s) 6.3 4 %. A few days 6 vote(s) 12. 5 5%. A few weeks or longer 3 vote(s) 6. 3%.
They may also come and go. If these problems wonât go away or worseâyou feel like they are disrupting your daily lifeâyou may have PTSD. Some factors can increase the likelihood of a traumatic event leading to PTSD, such as: 1  The intensity of the trauma.2  Being hurt or losing a loved one. 3  Being physically close to the traumatic event. 4  Feeling you were not in control. 5  Having a lack of support after the event.ome factors can increase the likelihood of a traumatic event leading to PTSD, such as: 1  The intensity of the trauma. 2  Being hurt or losing a loved one. 3  Being physically close to the traumatic event. 4  Feeling you were not in control.