True-False Review
For Questions (a)-(f), decide if the given statement is true or false, and give a brief justification for your answer. If true, you can quote a relevant definition or theorem from the text. If false, provide an example, illustration, or brief explanation of why the statement is false.
If
Want to see the full answer?
Check out a sample textbook solutionChapter 6 Solutions
Differential Equations and Linear Algebra (4th Edition)
- True or False? In Exercises 53 and 54, determine whether each statement is true or false. If a statement is true, give a reason or cite an appropriate statement from the text. If a statement is false, provide an example that shows the statement is not true in all cases or cite an appropriate statement from the text. a If T:RnRm is a linear transformation such that T(e1)=[a11,a21am1]TT(e2)=[a12,a22am2]TT(en)=[a1n,a2namn]T then the mn matrix A=[aij] whose columns corresponds to T(ei) is such that T(v)=Av for every v in Rn is called the standard matrix for T. b All linear transformations T have a unique inverse T1.arrow_forwardCalculus In Exercises 61-64, for the linear transformation from Example 10, find the preimage of each function. Dx(f)=sinxarrow_forwardLet T:P2P4 be the linear transformation T(p)=x2p. Find the matrix for T relative to the bases B={1,x,x2} and B={1,x,x2,x3,x4}.arrow_forward
- Guided Proof Let B be an invertible nn matrix. Prove that the linear transformation T:Mn,nMn,n represented by T(A)=AB is an isomorphism. Getting started: To show that the linear transformation is an isomorphism, you need to show that T is both onto and one-to-one. (i) T is a linear transformation with vector spaces of equal dimension, so by Theorem 6.8, you only need to show that T is one-to-one. (ii) To show that T is one-to-one, you need to determine the kernel of T and show that it is {0} Theorem 6.6. Use the fact that B is an invertible nn matrix and that T(A)=AB. (iii) Conclude that T is an isomorphism.arrow_forwardLet T:P2P3 be the linear transformation T(p)=xp. Find the matrix for T relative to the bases B={1,x,x2} and B={1,x,x2,x3}.arrow_forwardCAPSTONE Let T:R4R3 be the linear transformation represented by T(x)=Ax, where A=[121001230001]. (a) Find the dimension of the domain. (b) Find the dimension of the range. (c) Find the dimension of the kernel. (d) Is T one-to-one? Explain. (e) Is T is onto? Explain. (f) Is T an isomorphism? Explain.arrow_forward
- A translation in R2 is a function of the form T(x,y)=(xh,yk), where at least one of the constants h and k is nonzero. (a) Show that a translation in R2 is not a linear transformation. (b) For the translation T(x,y)=(x2,y+1), determine the images of (0,0,),(2,1), and (5,4). (c) Show that a translation in R2 has no fixed points.arrow_forwardCalculus Let B={1,x,x2,x3} be a basis for P3, and T:P3P4 be the linear transformation represented by T(xk)=0xtkdt. (a) Find the matrix A for T with respect to B and the standard basis for P4. (b) Use A to integrate p(x)=84x+3x3.arrow_forwardIn Exercises 1-3, fill in the blanks. A nonrigid transformation of the graph of y=fx represented by gx=cfx is a when c1 and a when 0c1.arrow_forward
- Elementary Linear Algebra (MindTap Course List)AlgebraISBN:9781305658004Author:Ron LarsonPublisher:Cengage LearningAlgebra and Trigonometry (MindTap Course List)AlgebraISBN:9781305071742Author:James Stewart, Lothar Redlin, Saleem WatsonPublisher:Cengage LearningCollege AlgebraAlgebraISBN:9781305115545Author:James Stewart, Lothar Redlin, Saleem WatsonPublisher:Cengage Learning
- Linear Algebra: A Modern IntroductionAlgebraISBN:9781285463247Author:David PoolePublisher:Cengage Learning