Thank you very much for providing your work. We appreciate it. There is, however, a reason that we ask that you not give a list of problems in one thread: the thread quickly becomes a mess as people answer different problems. It is exacerbated when you ask about question b and both problems have a question marked as b. Nor is it helped by telling us “actually is the first image,” a sentence without a subject is literally talking about nothing.
I am making a guess that you are asking about the geometric interpretation of what your formula for the derivative means at x = 3.
Let’s start by asking what real number corresponds to the derivative when x = 3?
So what does that tell us about the line of tangency to the ellipse at x = 3.
What does that tell us about the derivative?
What is the sign of the function’s derivative if 0 < x < 3?
Is there even a function?
