What is the value of: lim as x appraches -2 from the right of (g(x) + 3g(-x))?
Clash Royale CLAN TAG#URR8PPP
up vote
-1
down vote
favorite
Im pretty confused about this question. How would i go about finding out the answer?
I'm specifically confused about the negative x. I got 10 but i feel as if it is wrong.
enter image description here
enter image description here
calculus limits
add a comment |
up vote
-1
down vote
favorite
Im pretty confused about this question. How would i go about finding out the answer?
I'm specifically confused about the negative x. I got 10 but i feel as if it is wrong.
enter image description here
enter image description here
calculus limits
add a comment |
up vote
-1
down vote
favorite
up vote
-1
down vote
favorite
Im pretty confused about this question. How would i go about finding out the answer?
I'm specifically confused about the negative x. I got 10 but i feel as if it is wrong.
enter image description here
enter image description here
calculus limits
Im pretty confused about this question. How would i go about finding out the answer?
I'm specifically confused about the negative x. I got 10 but i feel as if it is wrong.
enter image description here
enter image description here
calculus limits
calculus limits
asked Sep 11 at 2:42
rico
1
1
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
up vote
0
down vote
Since we are taking the limit from the left of -2 but are now dealing with a -x we are actually approaching 2 from the right in the 3g(-x). We can see this by considering a simple sequence approaching -2 from the left such as -3, -2.5, -2.25, -2.125, etc. This will approach -2 from the left but if we use -x we get a sequence 3, 2.5, 2.25, 2.125 etc. As such we can now see that the 3g(-x) should be 3 as the limit as x approaches 2 from the right is 1.
add a comment |
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
0
down vote
Since we are taking the limit from the left of -2 but are now dealing with a -x we are actually approaching 2 from the right in the 3g(-x). We can see this by considering a simple sequence approaching -2 from the left such as -3, -2.5, -2.25, -2.125, etc. This will approach -2 from the left but if we use -x we get a sequence 3, 2.5, 2.25, 2.125 etc. As such we can now see that the 3g(-x) should be 3 as the limit as x approaches 2 from the right is 1.
add a comment |
up vote
0
down vote
Since we are taking the limit from the left of -2 but are now dealing with a -x we are actually approaching 2 from the right in the 3g(-x). We can see this by considering a simple sequence approaching -2 from the left such as -3, -2.5, -2.25, -2.125, etc. This will approach -2 from the left but if we use -x we get a sequence 3, 2.5, 2.25, 2.125 etc. As such we can now see that the 3g(-x) should be 3 as the limit as x approaches 2 from the right is 1.
add a comment |
up vote
0
down vote
up vote
0
down vote
Since we are taking the limit from the left of -2 but are now dealing with a -x we are actually approaching 2 from the right in the 3g(-x). We can see this by considering a simple sequence approaching -2 from the left such as -3, -2.5, -2.25, -2.125, etc. This will approach -2 from the left but if we use -x we get a sequence 3, 2.5, 2.25, 2.125 etc. As such we can now see that the 3g(-x) should be 3 as the limit as x approaches 2 from the right is 1.
Since we are taking the limit from the left of -2 but are now dealing with a -x we are actually approaching 2 from the right in the 3g(-x). We can see this by considering a simple sequence approaching -2 from the left such as -3, -2.5, -2.25, -2.125, etc. This will approach -2 from the left but if we use -x we get a sequence 3, 2.5, 2.25, 2.125 etc. As such we can now see that the 3g(-x) should be 3 as the limit as x approaches 2 from the right is 1.
answered Sep 11 at 2:52
sf23
133
133
add a comment |
add a comment |
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fmath.stackexchange.com%2fquestions%2f2912681%2fwhat-is-the-value-of-lim-as-x-appraches-2-from-the-right-of-gx-3g-x%23new-answer', 'question_page');
);
Post as a guest
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password