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%.
Although PTSD symptoms can begin right after a traumatic event, PTSD is not diagnosed unless the symptoms last for at least one month, and either cause significant distress or interfere with work or home life.e-experiencing Symptoms. Re-experiencing symptoms are symptoms that involve reliving the traumatic event. There are a number of ways in which people may relive a trauma. They may have upsetting memories of the traumatic event. These memories can come back when they are not expecting them.