Question: Derive an equation equivalent to Equation (3-24) for an interior node in a three-dimensional heat-flow problem. Equation (3-24) +1, + -1, + ,+1 + ,-1

Derive an equation equivalent to Equation (3-24) for an interior node in a three-dimensional heat-flow problem.
Equation (3-24)
Тт+1,л + Тт-1,л + Тт,я+1 + Тт,л-1 —4Тт,л 3D0 m.n- m,n :0 m,n-

+1, + -1, + ,+1 + ,-1 4, 3D0 m.n- m,n :0 m,n-

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