Calculate the limit $lim_{xto+infty}xe^xsinleft(e^{-x}sinfrac{2}{x}right)$ [closed]












-3












$begingroup$


Please help me to calcute the follow limit:
$$lim_{xto+infty}xe^xsinleft(e^{-x}sinfrac{2}{x}right)$$










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$endgroup$



closed as off-topic by Key Flex, Nosrati, KM101, José Carlos Santos, Shailesh Jan 7 at 12:57


This question appears to be off-topic. The users who voted to close gave this specific reason:


  • "This question is missing context or other details: Please provide additional context, which ideally explains why the question is relevant to you and our community. Some forms of context include: background and motivation, relevant definitions, source, possible strategies, your current progress, why the question is interesting or important, etc." – Key Flex, Nosrati, KM101, José Carlos Santos, Shailesh

If this question can be reworded to fit the rules in the help center, please edit the question.









  • 2




    $begingroup$
    Please share how you have tried to solve by editing the post
    $endgroup$
    – Shubham Johri
    Jan 7 at 12:39








  • 2




    $begingroup$
    Please show your work. Do you have any ideas?
    $endgroup$
    – KM101
    Jan 7 at 12:40












  • $begingroup$
    It's unclear what you are allowed to use. How about Taylor expansion?
    $endgroup$
    – roman
    Jan 7 at 12:41
















-3












$begingroup$


Please help me to calcute the follow limit:
$$lim_{xto+infty}xe^xsinleft(e^{-x}sinfrac{2}{x}right)$$










share|cite|improve this question









$endgroup$



closed as off-topic by Key Flex, Nosrati, KM101, José Carlos Santos, Shailesh Jan 7 at 12:57


This question appears to be off-topic. The users who voted to close gave this specific reason:


  • "This question is missing context or other details: Please provide additional context, which ideally explains why the question is relevant to you and our community. Some forms of context include: background and motivation, relevant definitions, source, possible strategies, your current progress, why the question is interesting or important, etc." – Key Flex, Nosrati, KM101, José Carlos Santos, Shailesh

If this question can be reworded to fit the rules in the help center, please edit the question.









  • 2




    $begingroup$
    Please share how you have tried to solve by editing the post
    $endgroup$
    – Shubham Johri
    Jan 7 at 12:39








  • 2




    $begingroup$
    Please show your work. Do you have any ideas?
    $endgroup$
    – KM101
    Jan 7 at 12:40












  • $begingroup$
    It's unclear what you are allowed to use. How about Taylor expansion?
    $endgroup$
    – roman
    Jan 7 at 12:41














-3












-3








-3





$begingroup$


Please help me to calcute the follow limit:
$$lim_{xto+infty}xe^xsinleft(e^{-x}sinfrac{2}{x}right)$$










share|cite|improve this question









$endgroup$




Please help me to calcute the follow limit:
$$lim_{xto+infty}xe^xsinleft(e^{-x}sinfrac{2}{x}right)$$







calculus






share|cite|improve this question













share|cite|improve this question











share|cite|improve this question




share|cite|improve this question










asked Jan 7 at 12:36









brisk tutibrisk tuti

83




83




closed as off-topic by Key Flex, Nosrati, KM101, José Carlos Santos, Shailesh Jan 7 at 12:57


This question appears to be off-topic. The users who voted to close gave this specific reason:


  • "This question is missing context or other details: Please provide additional context, which ideally explains why the question is relevant to you and our community. Some forms of context include: background and motivation, relevant definitions, source, possible strategies, your current progress, why the question is interesting or important, etc." – Key Flex, Nosrati, KM101, José Carlos Santos, Shailesh

If this question can be reworded to fit the rules in the help center, please edit the question.




closed as off-topic by Key Flex, Nosrati, KM101, José Carlos Santos, Shailesh Jan 7 at 12:57


This question appears to be off-topic. The users who voted to close gave this specific reason:


  • "This question is missing context or other details: Please provide additional context, which ideally explains why the question is relevant to you and our community. Some forms of context include: background and motivation, relevant definitions, source, possible strategies, your current progress, why the question is interesting or important, etc." – Key Flex, Nosrati, KM101, José Carlos Santos, Shailesh

If this question can be reworded to fit the rules in the help center, please edit the question.








  • 2




    $begingroup$
    Please share how you have tried to solve by editing the post
    $endgroup$
    – Shubham Johri
    Jan 7 at 12:39








  • 2




    $begingroup$
    Please show your work. Do you have any ideas?
    $endgroup$
    – KM101
    Jan 7 at 12:40












  • $begingroup$
    It's unclear what you are allowed to use. How about Taylor expansion?
    $endgroup$
    – roman
    Jan 7 at 12:41














  • 2




    $begingroup$
    Please share how you have tried to solve by editing the post
    $endgroup$
    – Shubham Johri
    Jan 7 at 12:39








  • 2




    $begingroup$
    Please show your work. Do you have any ideas?
    $endgroup$
    – KM101
    Jan 7 at 12:40












  • $begingroup$
    It's unclear what you are allowed to use. How about Taylor expansion?
    $endgroup$
    – roman
    Jan 7 at 12:41








2




2




$begingroup$
Please share how you have tried to solve by editing the post
$endgroup$
– Shubham Johri
Jan 7 at 12:39






$begingroup$
Please share how you have tried to solve by editing the post
$endgroup$
– Shubham Johri
Jan 7 at 12:39






2




2




$begingroup$
Please show your work. Do you have any ideas?
$endgroup$
– KM101
Jan 7 at 12:40






$begingroup$
Please show your work. Do you have any ideas?
$endgroup$
– KM101
Jan 7 at 12:40














$begingroup$
It's unclear what you are allowed to use. How about Taylor expansion?
$endgroup$
– roman
Jan 7 at 12:41




$begingroup$
It's unclear what you are allowed to use. How about Taylor expansion?
$endgroup$
– roman
Jan 7 at 12:41










1 Answer
1






active

oldest

votes


















0












$begingroup$

Hints:




  • $lim_{xto +infty}e^{-x}sinfrac{2}{x} = 0$

  • $lim_{xto +infty} frac{sin left(e^{-x}sinfrac{2}{x} right)}{e^{-x}sinfrac{2}{x}} = 1$






share|cite|improve this answer









$endgroup$













  • $begingroup$
    $lim_{xto+infty}xe^xsinleft(e^{-x}sinfrac{2}{x}right)$ is not to equal for the second $cdot$
    $endgroup$
    – brisk tuti
    Jan 7 at 13:06










  • $begingroup$
    Just use the hints and write: $$xe^xsinleft(e^{-x}sinfrac{2}{x}right) = xe^x cdot e^{-x}sinfrac{2}{x} cdot frac{sin left(e^{-x}sinfrac{2}{x} right)}{e^{-x}sinfrac{2}{x}} = 2cdot frac{sinfrac{2}{x}}{frac{2}{x}} cdot frac{sin left(e^{-x}sinfrac{2}{x} right)}{e^{-x}sinfrac{2}{x}}$$
    $endgroup$
    – trancelocation
    Jan 7 at 13:11












  • $begingroup$
    finally the given lim is equal to 2
    $endgroup$
    – brisk tuti
    Jan 7 at 13:22










  • $begingroup$
    Exactly. This is the limit.
    $endgroup$
    – trancelocation
    Jan 7 at 13:26










  • $begingroup$
    thanks sir, I didnt now the solve and another lim, can you help me please $$lim_{xto-infty}xe^{sin x}$$
    $endgroup$
    – brisk tuti
    Jan 7 at 13:35




















1 Answer
1






active

oldest

votes








1 Answer
1






active

oldest

votes









active

oldest

votes






active

oldest

votes









0












$begingroup$

Hints:




  • $lim_{xto +infty}e^{-x}sinfrac{2}{x} = 0$

  • $lim_{xto +infty} frac{sin left(e^{-x}sinfrac{2}{x} right)}{e^{-x}sinfrac{2}{x}} = 1$






share|cite|improve this answer









$endgroup$













  • $begingroup$
    $lim_{xto+infty}xe^xsinleft(e^{-x}sinfrac{2}{x}right)$ is not to equal for the second $cdot$
    $endgroup$
    – brisk tuti
    Jan 7 at 13:06










  • $begingroup$
    Just use the hints and write: $$xe^xsinleft(e^{-x}sinfrac{2}{x}right) = xe^x cdot e^{-x}sinfrac{2}{x} cdot frac{sin left(e^{-x}sinfrac{2}{x} right)}{e^{-x}sinfrac{2}{x}} = 2cdot frac{sinfrac{2}{x}}{frac{2}{x}} cdot frac{sin left(e^{-x}sinfrac{2}{x} right)}{e^{-x}sinfrac{2}{x}}$$
    $endgroup$
    – trancelocation
    Jan 7 at 13:11












  • $begingroup$
    finally the given lim is equal to 2
    $endgroup$
    – brisk tuti
    Jan 7 at 13:22










  • $begingroup$
    Exactly. This is the limit.
    $endgroup$
    – trancelocation
    Jan 7 at 13:26










  • $begingroup$
    thanks sir, I didnt now the solve and another lim, can you help me please $$lim_{xto-infty}xe^{sin x}$$
    $endgroup$
    – brisk tuti
    Jan 7 at 13:35


















0












$begingroup$

Hints:




  • $lim_{xto +infty}e^{-x}sinfrac{2}{x} = 0$

  • $lim_{xto +infty} frac{sin left(e^{-x}sinfrac{2}{x} right)}{e^{-x}sinfrac{2}{x}} = 1$






share|cite|improve this answer









$endgroup$













  • $begingroup$
    $lim_{xto+infty}xe^xsinleft(e^{-x}sinfrac{2}{x}right)$ is not to equal for the second $cdot$
    $endgroup$
    – brisk tuti
    Jan 7 at 13:06










  • $begingroup$
    Just use the hints and write: $$xe^xsinleft(e^{-x}sinfrac{2}{x}right) = xe^x cdot e^{-x}sinfrac{2}{x} cdot frac{sin left(e^{-x}sinfrac{2}{x} right)}{e^{-x}sinfrac{2}{x}} = 2cdot frac{sinfrac{2}{x}}{frac{2}{x}} cdot frac{sin left(e^{-x}sinfrac{2}{x} right)}{e^{-x}sinfrac{2}{x}}$$
    $endgroup$
    – trancelocation
    Jan 7 at 13:11












  • $begingroup$
    finally the given lim is equal to 2
    $endgroup$
    – brisk tuti
    Jan 7 at 13:22










  • $begingroup$
    Exactly. This is the limit.
    $endgroup$
    – trancelocation
    Jan 7 at 13:26










  • $begingroup$
    thanks sir, I didnt now the solve and another lim, can you help me please $$lim_{xto-infty}xe^{sin x}$$
    $endgroup$
    – brisk tuti
    Jan 7 at 13:35
















0












0








0





$begingroup$

Hints:




  • $lim_{xto +infty}e^{-x}sinfrac{2}{x} = 0$

  • $lim_{xto +infty} frac{sin left(e^{-x}sinfrac{2}{x} right)}{e^{-x}sinfrac{2}{x}} = 1$






share|cite|improve this answer









$endgroup$



Hints:




  • $lim_{xto +infty}e^{-x}sinfrac{2}{x} = 0$

  • $lim_{xto +infty} frac{sin left(e^{-x}sinfrac{2}{x} right)}{e^{-x}sinfrac{2}{x}} = 1$







share|cite|improve this answer












share|cite|improve this answer



share|cite|improve this answer










answered Jan 7 at 12:51









trancelocationtrancelocation

9,6801722




9,6801722












  • $begingroup$
    $lim_{xto+infty}xe^xsinleft(e^{-x}sinfrac{2}{x}right)$ is not to equal for the second $cdot$
    $endgroup$
    – brisk tuti
    Jan 7 at 13:06










  • $begingroup$
    Just use the hints and write: $$xe^xsinleft(e^{-x}sinfrac{2}{x}right) = xe^x cdot e^{-x}sinfrac{2}{x} cdot frac{sin left(e^{-x}sinfrac{2}{x} right)}{e^{-x}sinfrac{2}{x}} = 2cdot frac{sinfrac{2}{x}}{frac{2}{x}} cdot frac{sin left(e^{-x}sinfrac{2}{x} right)}{e^{-x}sinfrac{2}{x}}$$
    $endgroup$
    – trancelocation
    Jan 7 at 13:11












  • $begingroup$
    finally the given lim is equal to 2
    $endgroup$
    – brisk tuti
    Jan 7 at 13:22










  • $begingroup$
    Exactly. This is the limit.
    $endgroup$
    – trancelocation
    Jan 7 at 13:26










  • $begingroup$
    thanks sir, I didnt now the solve and another lim, can you help me please $$lim_{xto-infty}xe^{sin x}$$
    $endgroup$
    – brisk tuti
    Jan 7 at 13:35




















  • $begingroup$
    $lim_{xto+infty}xe^xsinleft(e^{-x}sinfrac{2}{x}right)$ is not to equal for the second $cdot$
    $endgroup$
    – brisk tuti
    Jan 7 at 13:06










  • $begingroup$
    Just use the hints and write: $$xe^xsinleft(e^{-x}sinfrac{2}{x}right) = xe^x cdot e^{-x}sinfrac{2}{x} cdot frac{sin left(e^{-x}sinfrac{2}{x} right)}{e^{-x}sinfrac{2}{x}} = 2cdot frac{sinfrac{2}{x}}{frac{2}{x}} cdot frac{sin left(e^{-x}sinfrac{2}{x} right)}{e^{-x}sinfrac{2}{x}}$$
    $endgroup$
    – trancelocation
    Jan 7 at 13:11












  • $begingroup$
    finally the given lim is equal to 2
    $endgroup$
    – brisk tuti
    Jan 7 at 13:22










  • $begingroup$
    Exactly. This is the limit.
    $endgroup$
    – trancelocation
    Jan 7 at 13:26










  • $begingroup$
    thanks sir, I didnt now the solve and another lim, can you help me please $$lim_{xto-infty}xe^{sin x}$$
    $endgroup$
    – brisk tuti
    Jan 7 at 13:35


















$begingroup$
$lim_{xto+infty}xe^xsinleft(e^{-x}sinfrac{2}{x}right)$ is not to equal for the second $cdot$
$endgroup$
– brisk tuti
Jan 7 at 13:06




$begingroup$
$lim_{xto+infty}xe^xsinleft(e^{-x}sinfrac{2}{x}right)$ is not to equal for the second $cdot$
$endgroup$
– brisk tuti
Jan 7 at 13:06












$begingroup$
Just use the hints and write: $$xe^xsinleft(e^{-x}sinfrac{2}{x}right) = xe^x cdot e^{-x}sinfrac{2}{x} cdot frac{sin left(e^{-x}sinfrac{2}{x} right)}{e^{-x}sinfrac{2}{x}} = 2cdot frac{sinfrac{2}{x}}{frac{2}{x}} cdot frac{sin left(e^{-x}sinfrac{2}{x} right)}{e^{-x}sinfrac{2}{x}}$$
$endgroup$
– trancelocation
Jan 7 at 13:11






$begingroup$
Just use the hints and write: $$xe^xsinleft(e^{-x}sinfrac{2}{x}right) = xe^x cdot e^{-x}sinfrac{2}{x} cdot frac{sin left(e^{-x}sinfrac{2}{x} right)}{e^{-x}sinfrac{2}{x}} = 2cdot frac{sinfrac{2}{x}}{frac{2}{x}} cdot frac{sin left(e^{-x}sinfrac{2}{x} right)}{e^{-x}sinfrac{2}{x}}$$
$endgroup$
– trancelocation
Jan 7 at 13:11














$begingroup$
finally the given lim is equal to 2
$endgroup$
– brisk tuti
Jan 7 at 13:22




$begingroup$
finally the given lim is equal to 2
$endgroup$
– brisk tuti
Jan 7 at 13:22












$begingroup$
Exactly. This is the limit.
$endgroup$
– trancelocation
Jan 7 at 13:26




$begingroup$
Exactly. This is the limit.
$endgroup$
– trancelocation
Jan 7 at 13:26












$begingroup$
thanks sir, I didnt now the solve and another lim, can you help me please $$lim_{xto-infty}xe^{sin x}$$
$endgroup$
– brisk tuti
Jan 7 at 13:35






$begingroup$
thanks sir, I didnt now the solve and another lim, can you help me please $$lim_{xto-infty}xe^{sin x}$$
$endgroup$
– brisk tuti
Jan 7 at 13:35





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