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%.
BUT, the question most people have is, âHow long does withdrawal last??!â Bear in mind, this can vary due to the type of opiate, how long it was taken and the personâs physical makeup. The most acute withdrawal symptoms will last 5-7 days, although some of the psychological symptoms (depression) can last a lot longer.