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Testing for Linear Independence In Exercises
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Elementary Linear Algebra
- Proof Let S={u,v} be a linearly independent set. Prove that the set {u+v,uv} is linearly independent.arrow_forwardWriting a Linear Combination In Exercises 47-50, write v as a linear combination of u1, u2,andu3, if possible. v=(10,1,4),u1=(2,3,5),u2=(1,2,4),u3=(2,2,3)arrow_forwardProof Prove that if S1 is a nonempty subset of the finite set S2, and S1 is linearly dependent, then so is S2.arrow_forward
- True or false? In Exercises 63and 64, 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={v1,v2,...,vk}, k2 is linearly independent if and only if at least one of the vectors vi can be written as linear combination of the other vectors in S. (b) If a subset S spans a vector space V, then every vector in V can be written as a linear combination of the vectors in S.arrow_forwardSpanning Sets, Linear Independence and Bases. In Exercises 27-32 determine whether the set a spans R3, b is linearly independent, and c is a basis of R3. S={(1,5,4),(11,6,1),(2,3,5)}arrow_forwardProof When the set of vectors {u1,u2,...,un} is linearly independent and the set {u1,u2,...,un,v} is linearly dependent, prove that v is the linear combination of the uis.arrow_forward
- Median Sale Price The median sale price p (in thousands of dollars) of an existing one-family home in the United States from 2002 through 2014 (see figure) can be approximated by the model pt=0.757t2+20.80t+127.2,2t63.879t2+82.50t+605.8,7t114.171t2+124.34t714.2,12t14 where t represents the year, with t=2 corresponding to 2002. Use this model to find the median sale price of an existing one-family home in each year from 2002 through 2014.arrow_forwardFor which values of t is each set linearly independent? a S={(t,1,1),(1,t,1),(1,1,t)} b S={(t,1,1),(1,0,1),(1,1,3t)}arrow_forwardCalculus In Exercises 57-60, let Dx be the linear transformation from C[a,b] into C[a,b] from Example 10. Determine whether each statement is true or false. Explain. Dx(ex2+2x)=Dx(ex2)+2Dx(x)arrow_forward
- Determining Whether a Set Is a Basis In Exercises 5356, determine whether S is a basis for R3. If it is, write u=(8,3,8) as a linear combination of the vectors in S. S={(23,52,1),(1,32,0),(2,12,6)}arrow_forwardTake this test to review the material in Chapters 4 and 5. After you are finished, check your work against the answers in the back of the book. a Explain what it means to say that a set of vectors is linearly independent. b Determine whether the set S is linearly dependent or independent. S={(1,0,1,0),(0,3,0,1),(1,1,2,2),(3,4,1,2)}arrow_forwardLet v1, v2, and v3 be three linearly independent vectors in a vector space V. Is the set {v12v2,2v23v3,3v3v1} linearly dependent or linearly independent? Explain.arrow_forward
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