Answer: Borderline personality disorder
Explanation:
Since Marty is moody, manipulative, unstable, lacks a clear sense of identity, and often clings to others, this implies that Marty might be diagnosed with the borderline personality disorder.
Borderline personality disorder is a mental disorder characterised whereby the person affected has unstable behavior, moods, and relationships. In this case, Marty will be instable, impulsive, insecure, and have a feeling of worthlessness.
The treatment of borderline personality disorder is usually through talk therapy or medication.
The Anglo-Saxons were a cultural group who inhabited England in the Early Middle Ages. They traced their origins to the 5th century settlement of incomers to Britain, who migrated to the island from the North Sea coastlands of mainland Europe. Some sources say that the Saxon warriors were invited to come, to the area now know as England, to help keep out invaders from Scotland and Ireland. Another reason for coming may have been because their land often flooded and it was difficult to grow crops, so they were looking for new places to settle down and farm.
(a)
We have been given an equation
. Upon taking derivative of this equation with respect to x on both the sides, we get:

(b)
In order to write the equation of tangent line, we need to find the slope of the line. We know that point (3,11) lies on the graph. Therefore, we write the slope of the tangent as:

Therefore, equation of tangent line is:

(c)
We know that slope of tangent is given as
. The tangent will be vertical when denominator of slope is zero, that is:

- Christianity integrated most fully into regions where European colonial powers ruled, where there was an overwhelming European presence, where the established society had been defeated and disrupted, and where no literate world religion was already established.
- It had the least impact when it had to operate with the permission of non-Christian rulers, when it sought to convert in a society that was stable and well established, and when it sought to convert in a region where a literate world religion already existed.
Source: https://www.coursehero.com/file/p6tre7v/Big-Picture-Questions-1-Why-did-Christianity-take-hold-in-some-places-more-than/