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%.
No. But nearly everyone will have the symptoms of post-traumatic stress for the first month or so. This is because they can help to keep you going, and help you to understand the experience you have been through.This is an 'acute stress reaction' .ost people, in time, get over experiences like this without needing help. In some people, though, traumatic experiences set off a reaction that can last for many months or years. This is called Post-traumatic Stress Disorder, or PTSD for short.