Explanation:
Yes, it does. The reason being it causes people to spend more time with devices than with those around them. It also keeps people from truly resting during leisure time.
(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:

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Neurosurgery
A neurological control device in the human brain