Question

removable and nonremovable discontinuities in exercises 35–60, find the -values (if any) at which is not continuous. which of the discontinuities are removable?

1. Philomena
This prompt is about removable discontinuities. See the explanation below.

### What is a removable discontinuity?

A removable discontinuity is a point in a graph where it is not linked but may be made so by filling in a single point.
It is also possible to define it as follows:
A discontinuity is detachable at x=a if the limit limxaf(x) exists and is finite. There are two kinds of removable discontinuities. At x=a, the function is undefined.
It should be noted that a nonremovable discontinuity is one in which the limit of the function does not exist at a given point, i.e. lim xa f(x) does not exist.

### What is the calculation justifying the above answer?

Part A: Where F(x) = 6/x
At x = 0
f(x) = 6/0 = ∞; Thus,
At x = 0
f(x) is not defined. It is correct to state therefore, that f is continuous for all real integers or number save “zero”.
Hence,  f(x) is continuous at each x ∈ R – {α}

Part B: Where F(x) = 4/(x-6)

At x = 6
F(x) = 4/(6-6)
= 4/0
= ∞;
Thus, f (x) is not defined.
We can state therefore that F is continuous at x ∈ R – { α}
Part C: Where F (x)
F(x) = x² – 9
For each C∈R,
F(c) = C² = 9
Thus, F(x) here is defined and continuous. That is F(x) is continuous at x ∈ R
Part D: Where F(x) x² – 4x + 4
With respect to every C ∈ R,
F(c) = C² – 4c + 4
In this instance as well, F(c) is defined and continuous.

Thus, F(x) in this case is continuous for all X ∈ R