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Which of these changes should be made in the semi-discretized equation to get the fully discretized equation?

Which of these changes should be made in the semi-discretized equation to get the fully discretized equation? Correct Answer Express the face values in terms of the cell values

While discretizing the transient term, the semi-discretized equation contains the values at the cell faces. If these face values are expressed in terms of the cell values, the complete discretized form of the equation can be obtained.

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