Determine a linear operator $T : Bbb R^3 → Bbb R^4$ the image is generated by (2, 1, 1) and (1, -1, 2). [on...












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Determine a linear operator $T:Bbb R^3 → Bbb R^4$ the image is generated by (2, 1, 1) and (1, -1, 2).










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put on hold as off-topic by StubbornAtom, zipirovich, Hans Lundmark, jgon, Cesareo Jan 5 at 0:29


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  • 3




    The codomain is four-dimensional, and therefore the image must be generated by four-dimensional vectors.
    – Arthur
    Jan 4 at 14:13










  • I do not understand difference between linear operator and linear transformation. So I'm just asking for help.
    – Lidy Monteiro
    Jan 4 at 14:26










  • There is no difference. Linear map is also sometimes used. Means the same thing.
    – Arthur
    Jan 4 at 14:28
















-2














Determine a linear operator $T:Bbb R^3 → Bbb R^4$ the image is generated by (2, 1, 1) and (1, -1, 2).










share|cite|improve this question













put on hold as off-topic by StubbornAtom, zipirovich, Hans Lundmark, jgon, Cesareo Jan 5 at 0:29


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." – StubbornAtom, zipirovich, jgon, Cesareo

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









  • 3




    The codomain is four-dimensional, and therefore the image must be generated by four-dimensional vectors.
    – Arthur
    Jan 4 at 14:13










  • I do not understand difference between linear operator and linear transformation. So I'm just asking for help.
    – Lidy Monteiro
    Jan 4 at 14:26










  • There is no difference. Linear map is also sometimes used. Means the same thing.
    – Arthur
    Jan 4 at 14:28














-2












-2








-2







Determine a linear operator $T:Bbb R^3 → Bbb R^4$ the image is generated by (2, 1, 1) and (1, -1, 2).










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Determine a linear operator $T:Bbb R^3 → Bbb R^4$ the image is generated by (2, 1, 1) and (1, -1, 2).







linear-algebra






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asked Jan 4 at 14:11









Lidy MonteiroLidy Monteiro

72




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put on hold as off-topic by StubbornAtom, zipirovich, Hans Lundmark, jgon, Cesareo Jan 5 at 0:29


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." – StubbornAtom, zipirovich, jgon, Cesareo

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 StubbornAtom, zipirovich, Hans Lundmark, jgon, Cesareo Jan 5 at 0:29


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." – StubbornAtom, zipirovich, jgon, Cesareo

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








  • 3




    The codomain is four-dimensional, and therefore the image must be generated by four-dimensional vectors.
    – Arthur
    Jan 4 at 14:13










  • I do not understand difference between linear operator and linear transformation. So I'm just asking for help.
    – Lidy Monteiro
    Jan 4 at 14:26










  • There is no difference. Linear map is also sometimes used. Means the same thing.
    – Arthur
    Jan 4 at 14:28














  • 3




    The codomain is four-dimensional, and therefore the image must be generated by four-dimensional vectors.
    – Arthur
    Jan 4 at 14:13










  • I do not understand difference between linear operator and linear transformation. So I'm just asking for help.
    – Lidy Monteiro
    Jan 4 at 14:26










  • There is no difference. Linear map is also sometimes used. Means the same thing.
    – Arthur
    Jan 4 at 14:28








3




3




The codomain is four-dimensional, and therefore the image must be generated by four-dimensional vectors.
– Arthur
Jan 4 at 14:13




The codomain is four-dimensional, and therefore the image must be generated by four-dimensional vectors.
– Arthur
Jan 4 at 14:13












I do not understand difference between linear operator and linear transformation. So I'm just asking for help.
– Lidy Monteiro
Jan 4 at 14:26




I do not understand difference between linear operator and linear transformation. So I'm just asking for help.
– Lidy Monteiro
Jan 4 at 14:26












There is no difference. Linear map is also sometimes used. Means the same thing.
– Arthur
Jan 4 at 14:28




There is no difference. Linear map is also sometimes used. Means the same thing.
– Arthur
Jan 4 at 14:28










1 Answer
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There is a difference between 'linear operator' and 'linear transformation'. The term 'linear operator' is generally used to mean a linear transformation from a vector space to the same vector space. For example, $I:Vto V$ is a linear operator (and transformation) while $M:Bbb R^2toBbb R^3$ is only a linear transformation.



The question probably meant $T:Bbb R^3toBbb R^3$ seeing as how it mentions 'linear operator' and proceeds to give three dimensional basis vectors for the range of $T$.



Recall that the range of a linear transformation is the column space of the matrix that represents it. Thus, you want the columns of the matrix of $T,[T]$ to be linear combinations of $(2,1,1),(1,-1,2)$. For example, $$[T]=begin{bmatrix}2&1&2\1&-1&1\1&2&1end{bmatrix}implies T(x,y,z)=(2x+y+2z,x-y+z,x+2y+z)$$



There are infinitely many answers.






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    1 Answer
    1






    active

    oldest

    votes








    1 Answer
    1






    active

    oldest

    votes









    active

    oldest

    votes






    active

    oldest

    votes









    0














    There is a difference between 'linear operator' and 'linear transformation'. The term 'linear operator' is generally used to mean a linear transformation from a vector space to the same vector space. For example, $I:Vto V$ is a linear operator (and transformation) while $M:Bbb R^2toBbb R^3$ is only a linear transformation.



    The question probably meant $T:Bbb R^3toBbb R^3$ seeing as how it mentions 'linear operator' and proceeds to give three dimensional basis vectors for the range of $T$.



    Recall that the range of a linear transformation is the column space of the matrix that represents it. Thus, you want the columns of the matrix of $T,[T]$ to be linear combinations of $(2,1,1),(1,-1,2)$. For example, $$[T]=begin{bmatrix}2&1&2\1&-1&1\1&2&1end{bmatrix}implies T(x,y,z)=(2x+y+2z,x-y+z,x+2y+z)$$



    There are infinitely many answers.






    share|cite|improve this answer


























      0














      There is a difference between 'linear operator' and 'linear transformation'. The term 'linear operator' is generally used to mean a linear transformation from a vector space to the same vector space. For example, $I:Vto V$ is a linear operator (and transformation) while $M:Bbb R^2toBbb R^3$ is only a linear transformation.



      The question probably meant $T:Bbb R^3toBbb R^3$ seeing as how it mentions 'linear operator' and proceeds to give three dimensional basis vectors for the range of $T$.



      Recall that the range of a linear transformation is the column space of the matrix that represents it. Thus, you want the columns of the matrix of $T,[T]$ to be linear combinations of $(2,1,1),(1,-1,2)$. For example, $$[T]=begin{bmatrix}2&1&2\1&-1&1\1&2&1end{bmatrix}implies T(x,y,z)=(2x+y+2z,x-y+z,x+2y+z)$$



      There are infinitely many answers.






      share|cite|improve this answer
























        0












        0








        0






        There is a difference between 'linear operator' and 'linear transformation'. The term 'linear operator' is generally used to mean a linear transformation from a vector space to the same vector space. For example, $I:Vto V$ is a linear operator (and transformation) while $M:Bbb R^2toBbb R^3$ is only a linear transformation.



        The question probably meant $T:Bbb R^3toBbb R^3$ seeing as how it mentions 'linear operator' and proceeds to give three dimensional basis vectors for the range of $T$.



        Recall that the range of a linear transformation is the column space of the matrix that represents it. Thus, you want the columns of the matrix of $T,[T]$ to be linear combinations of $(2,1,1),(1,-1,2)$. For example, $$[T]=begin{bmatrix}2&1&2\1&-1&1\1&2&1end{bmatrix}implies T(x,y,z)=(2x+y+2z,x-y+z,x+2y+z)$$



        There are infinitely many answers.






        share|cite|improve this answer












        There is a difference between 'linear operator' and 'linear transformation'. The term 'linear operator' is generally used to mean a linear transformation from a vector space to the same vector space. For example, $I:Vto V$ is a linear operator (and transformation) while $M:Bbb R^2toBbb R^3$ is only a linear transformation.



        The question probably meant $T:Bbb R^3toBbb R^3$ seeing as how it mentions 'linear operator' and proceeds to give three dimensional basis vectors for the range of $T$.



        Recall that the range of a linear transformation is the column space of the matrix that represents it. Thus, you want the columns of the matrix of $T,[T]$ to be linear combinations of $(2,1,1),(1,-1,2)$. For example, $$[T]=begin{bmatrix}2&1&2\1&-1&1\1&2&1end{bmatrix}implies T(x,y,z)=(2x+y+2z,x-y+z,x+2y+z)$$



        There are infinitely many answers.







        share|cite|improve this answer












        share|cite|improve this answer



        share|cite|improve this answer










        answered Jan 4 at 16:55









        Shubham JohriShubham Johri

        4,524717




        4,524717















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