Which of the following matrices are in RREF? (: ) (1 10 7 0 1 9 0 0 1 1 14 1 1 - 1 0 0 5 1 1 10

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Q: 6.5 Solve the following problem du (z > 0, t>0), %3D u(0,t) = 0 (t > 0), u(z,0) = f(z) (z > 0).

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