Math Help - Function Expression

1. Function Expression

Hi, I just want to make sure that I have the correct answer.
(a) 5
(b) 5
(c) 5
(d) 3
(e) 3
(f) 3

2. Originally Posted by miss.strw
Hi, I just want to make sure that I have the correct answer.
(a) 5
(b) 5
(c) 5
(d) 3
(e) 3
(f) 3
You have only one correct answer: (c).
The others are incorrect.
I will help you with d) $\lim _{x \to 2^ - } g(x) = - 1$

4. Is it
a) 1
b) 1
c) 5
d) -1
e) -1
f) DNE

Is this correct???

5. Originally Posted by miss.strw
Is it
a) 1
b) 1
c) 5
d) -1
e) -1
f) DNE
Is this correct???
f) is incorrect, all others are correct.

The answer to f) is -1. WHY?

6. I dont know. and right now, I asked my friend n she say
it is suppose to be:

d) = -2
f) = DNE

Now I am confused. Am I right, or is she right?

d) -1
f) -1 (But I don't understand why it is -1)

7. Originally Posted by miss.strw
I dont know. and right now, I asked my friend n she say
it is suppose to be:

d) = -2
f) = DNE

Now I am confused. Am I right, or is she right?

d) -1
f) -1 (But I don't understand why it is -1)
There is no limit at $2$. You can easily see in the graphic that the broken curves (the ones on the right and left hand sides of $2$) does not become arbitrarily closer to each other at $2$ (as it happens for $1$).
I guess Plato made a typo, check your answer for d, it must be $-2$.

Check the lines above by following the color order: red, yellow, green, blue and pink, as the vertical lines approach to $2$ from left, the horizontal lines approach to $-2$.

8. Originally Posted by Plato
f) is incorrect, all others are correct.

The answer to f) is -1. WHY?
Okay I got it thanks guys! Awesome forum! *thumbs up*