Finding T(0,-5,0) from Given Linear Transformation Values

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Homework Help Overview

The problem involves a linear transformation T from R^3 to P2, with specific values given for T at certain input vectors. The task is to find T(0,-5,0) or to explain why it cannot be determined from the provided information.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • Participants discuss the sufficiency of the given transformation values to determine T(0,-5,0). There are attempts to express (0,-5,0) as a linear combination of the provided vectors, and questions arise regarding the validity of these attempts.

Discussion Status

The discussion is ongoing, with participants exploring whether (0,-5,0) can be constructed from the known vectors. Some guidance has been offered, but there is no explicit consensus on the feasibility of determining T(0,-5,0) based on the given information.

Contextual Notes

There is a noted lack of information regarding the formula for the transformation, which is central to the discussion. Participants express uncertainty about their understanding of linear combinations and the implications for solving the problem.

iamzzz
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Homework Statement


You are given that T is a linear transformation from R^3 to P2, that T((1,1,-1))
=X, and that T((1,0,-1))=X^2+7X-1. Find T(0,-5,0) or explain why it cannot be determined form the given information.

Homework Equations


None


The Attempt at a Solution


There is only X given, and that 's not enough to fine T(0,-5,0)
 
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Saying that doesn't make it so. What have you tried?
 
T((1,1,-1)) and T((1,0,-1)) should produce something close.
 
True. So try something.
 
i don't knwo :(
 
Last edited:
Hint: Can you build (0,-5,0) out of what you have?
 
C1*(1,1,-1)+c2(1,0,-1)
C1=-5 and C2=5

-5(1,0,1)+5(1,7,-1)=(5,30,-5)
 
You didn't answer my question. Can you get (0,-5,0) or not?
 
no The question did not give the formula of the transformation
 
  • #10
Like I said above, stating it doesn't make it so. It looks like you are just guessing in post #7. You need to show why you can or can not get (0,-5,0) that way.
 
  • #11
I am going to read textbook. Did not attend class Thanks for the hlep
 
  • #12
Frankly, you sound like you have never actually taken a course in linear algebra! Do you know what a "linear combination" of vectors is?
 

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