(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:
Answer:
Positive Attitude And How It Can Help
Explanation:
In Many Ways Can A Positive Attitude Help With Your Studies.
1. Simply, just by putting effort and deciding to yourself that you can do it will put your body and mind-set to work.
2. It's Always Good To Keep Your Body In A Balanced Form. What I meant by this is that many people can get stressed and will become exhausted and not be able to catch up with what they are doing.
3. Can Also Change You. In a good way, just by making a daily routine of being on check, feeling good, and much more, your helping yourself out by being a good leader to make your body healthy, and be more concentrated in what you do.
4. Won't Give Up So Easily, I, Myself Haven't Given Up On My Work Or Studies Just By Being Positive. You feel good when you finish your work, and you might even finish quicker.
Answer:
<h2>a) It is seasonal</h2><h2 /><h2><u><em>
hope it helps</em></u></h2>
(0,-10) is the y-intercept
