The calcule of functions and limits [on hold]











up vote
-2
down vote

favorite












Could anyone help us?



We've got $f : (−1, 1) to mathbb{R}$ where $f(x) = dfrac{−1}{|x|^2}$ and we have to calculate $limlimits_{xto 0} f(x)$, using the definition of the limit. Then we have to define two functions ($g_1$ and $g_2$) using the following information:





  • $forall x in (−1, 1), f(x) leq g_1(x)$ and $limlimits_{xto 0} g_1(x)=−∞.$


  • $forall x in (−1, 1), f(x) leq g_2(x)$ and $limlimits_{xto 0} g_2(x)=−1 .$






limits functions







share|cite|improve this question















put on hold as off-topic by José Carlos Santos, John Douma, Vasya, RRL, Mark yesterday


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 improve the question by providing additional context, which ideally includes your thoughts on the problem and any attempts you have made to solve it. This information helps others identify where you have difficulties and helps them write answers appropriate to your experience level." – José Carlos Santos, John Douma, Vasya, RRL, Mark

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

















    up vote
    -2
    down vote

    favorite












    Could anyone help us?



    We've got $f : (−1, 1) to mathbb{R}$ where $f(x) = dfrac{−1}{|x|^2}$ and we have to calculate $limlimits_{xto 0} f(x)$, using the definition of the limit. Then we have to define two functions ($g_1$ and $g_2$) using the following information:





    • $forall x in (−1, 1), f(x) leq g_1(x)$ and $limlimits_{xto 0} g_1(x)=−∞.$


    • $forall x in (−1, 1), f(x) leq g_2(x)$ and $limlimits_{xto 0} g_2(x)=−1 .$






    limits functions







    share|cite|improve this question















    put on hold as off-topic by José Carlos Santos, John Douma, Vasya, RRL, Mark yesterday


    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 improve the question by providing additional context, which ideally includes your thoughts on the problem and any attempts you have made to solve it. This information helps others identify where you have difficulties and helps them write answers appropriate to your experience level." – José Carlos Santos, John Douma, Vasya, RRL, Mark

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















      up vote
      -2
      down vote

      favorite









      up vote
      -2
      down vote

      favorite











      Could anyone help us?



      We've got $f : (−1, 1) to mathbb{R}$ where $f(x) = dfrac{−1}{|x|^2}$ and we have to calculate $limlimits_{xto 0} f(x)$, using the definition of the limit. Then we have to define two functions ($g_1$ and $g_2$) using the following information:





      • $forall x in (−1, 1), f(x) leq g_1(x)$ and $limlimits_{xto 0} g_1(x)=−∞.$


      • $forall x in (−1, 1), f(x) leq g_2(x)$ and $limlimits_{xto 0} g_2(x)=−1 .$






      limits functions







      share|cite|improve this question















      Could anyone help us?



      We've got $f : (−1, 1) to mathbb{R}$ where $f(x) = dfrac{−1}{|x|^2}$ and we have to calculate $limlimits_{xto 0} f(x)$, using the definition of the limit. Then we have to define two functions ($g_1$ and $g_2$) using the following information:





      • $forall x in (−1, 1), f(x) leq g_1(x)$ and $limlimits_{xto 0} g_1(x)=−∞.$


      • $forall x in (−1, 1), f(x) leq g_2(x)$ and $limlimits_{xto 0} g_2(x)=−1 .$






      limits functions




      limits functions






      share|cite|improve this question















      share|cite|improve this question













      share|cite|improve this question




      share|cite|improve this question








      edited yesterday









      Tianlalu

      2,574632




      2,574632










      asked yesterday









      MUG

      1




      1




      put on hold as off-topic by José Carlos Santos, John Douma, Vasya, RRL, Mark yesterday


      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 improve the question by providing additional context, which ideally includes your thoughts on the problem and any attempts you have made to solve it. This information helps others identify where you have difficulties and helps them write answers appropriate to your experience level." – José Carlos Santos, John Douma, Vasya, RRL, Mark

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




      put on hold as off-topic by José Carlos Santos, John Douma, Vasya, RRL, Mark yesterday


      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 improve the question by providing additional context, which ideally includes your thoughts on the problem and any attempts you have made to solve it. This information helps others identify where you have difficulties and helps them write answers appropriate to your experience level." – José Carlos Santos, John Douma, Vasya, RRL, Mark

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



























          active

          oldest

          votes






















          active

          oldest

          votes













          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes

          Popular posts from this blog

          Can a sorcerer learn a 5th-level spell early by creating spell slots using the Font of Magic feature?

          Image
          28 6 $begingroup$ Per the Font of Magic feature, sorcerer can use Flexible Casting to create 5th-level spell slots at level 7, even though they are not typically available until level 9. You can transform unexpended sorcery points into one spell slot as a bonus action on your turn. The Creating Spell Slots table shows the cost of creating a spell slot of [5th level is 7] If such a sorcerer levels up while still having this 5th-level spell slot, can they choose a 5th-level spell as the spell they gain upon levelling up? The Spellcasting feature states: Additionally, when you gain a level in this class, you can choose one of the sorcerer spells you know and replace it with another spell from the sorcerer spell list, which also must be of a level for which you have spell slots.
          Read more

          Does disintegrating a polymorphed enemy still kill it after the 2018 errata?

          Image
          up vote 13 down vote favorite 1 After the 2018 errata, the disintegrate spell description now reads: A creature targeted by this spell must make a Dexterity saving throw. On a failed save, the target takes 10d6 + 40 force damage. The target is disintegrated if this damage leaves it with 0 hit points. If you were to polymorph an enemy into a rat and then disintegrate it, would the enemy be disintegrated or would it just return to its original form? I know that for Druids, it’s not an instant kill anymore, but is this the case for polymorph as well? dnd-5e spells polymorph errata share | improve this question edited 18 hours ago
          Read more

          A Topological Invariant for $pi_3(U(n))$

          Image
          3 3 $begingroup$ Recently, I saw a construction of topological invariant for $pi_3(U(n))$ with $ngeq 2$ : $$ N=frac{1}{24pi^2}int_{S^3} d^3x epsilon^{ijk} Tr[(U^{-1}partial_{x_i}U)(U^{-1}partial_{x_j}U)(U^{-1}partial_{x_k}U)] , $$ where $Uin U(n)$ depends on $boldsymbol{x}=(x_1,x_2,x_3)in S^3$ , $epsilon^{ijk}$ is the Levi-Civita symbol, $i,j,k=1,2,3$ , and the duplicated indexes are summed over. It is claimed that $N$ is an integer, but why? Update 02/02/2019 I think I got an argument for $n=2$ . In this case, $U=e^{i varphi} q$ with $qin SU(2)$ . Due to the trace and the Levi-Civita symbol in $N$ , $varphi$ does not contribute to $N$ . As $Tr[q^{dagger}partial_i q]=0$ and $(q^{dagger}partial_i q)^{dagger}=-q^{dagger}partial_i q$ , $q^{dagger}partial_i q$ in geneeral has the form $q^{dagger}partia
          Read more