Classifying a Point In Exercises 19-22, a
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Chapter 15 Solutions
Calculus: Early Transcendental Functions
- Proof Let W is a subspace of the vector space V. Prove that the zero vector in V is also the zero vector in W.arrow_forwardTrue or False?In Exercises 43 and 44, 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 W is a subspace of a vector space V, then it has closure under scalar multiplication as defined in V. (b) If V and W are both subspaces of vector space U, then the intersection of V and W is also a subspace. (c) If U, V, and W are vector spaces such that W is a subspace of V and U is a subspace of V, then W=U.arrow_forwardTesting for a Vector Space In Exercises 13-36, determine whether the set, together with the standard operations, is a vector space. If it is not, identify at least one of the ten vector space axioms that fails. C[0,1], the set of all continuous functions defined on the interval [0,1]arrow_forward
- Calculus Use the matrix from Exercise 45 to evaluate Dx[4x3xex]. 45. Calculus Let B={1,x,ex,xex} be a basis for a subspace W of the space of continuous functions, and let Dx be the differential operator on W. Find the matrix for Dx relative to the basis B.arrow_forwardProof Let V and W be two subspaces of vector space U. (a) Prove that the set V+W={u:u=v+w,vVandwW} is a subspace of U. (b) Describe V+W when V and W are subspaces of U=R2: V={(x,0):xisarealnumber} and W={(0,y):yisarealnumber}.arrow_forwardTrue or False? In Exercises 55 and 56, 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 A set S of vectors in an inner product space V is orthonormal when every vector is a unit vector and each pair of vectors is orthogonal. b If a set of nonzero vectors S in an inner product space V is orthogonal, then S is linearly independent.arrow_forward
- Calculus Repeat Exercise 45 for B={e2x,xe2x,x2e2x}. 45. Calculus Let B={1,x,ex,xex} be a basis for a subspace W of the space of continuous functions, and let Dx be the differential operator on W. Find the matrix for Dx relative to the basis B.arrow_forwardTrue or False? In Exercises 83-86, 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 The set of all n-tuples is n-space and is denoted by Rn. b The additive identity of a vector space is not unique. c Once a theorem has been proved for an abstract vector space, you need not give separate proofs for n-tuples, matrices, and polynomials.arrow_forwardTrue or False? In Exercises 49 and 50, 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 To show that a set is not a vector space, it is sufficient to show that just one axiom is not satisfied. b The set of all first-degree polynomials with the standard operations is a vector space. c The set of all pairs of real numbers of the form (0,y), with the standard operations on R2, is a vector space.arrow_forward
- Basis and Dimension In Exercises 75-78, find a a basis for and b the dimension of the subspace W of R4. W={(2st,s,t,s):sandtarerealnumbers}arrow_forwardProof Let V be an inner product space. For a fixed vector v0 in V, define T:VR by T(v)=v,v0. Prove that T is a linear transformation.arrow_forwardFlux Consider the vector fields and curve. a. Based on the picture, make a conjecture about whether the outwardflux of F across C is positive, negative, or zero.b. Compute the flux for the vector fields and curves. F and C givenarrow_forward
- Elementary Linear Algebra (MindTap Course List)AlgebraISBN:9781305658004Author:Ron LarsonPublisher:Cengage Learning