To approximate the eastern side of an internal control volume using the central differencing scheme we use:

Question

Answer

ϕ e = ( ϕ P + ϕ E ) / 2 {"version":"1.1","math":"\phi_e=(\phi_P+\phi_E)/2"}

Answer

ϕ e = ( ϕ P − ϕ E ) / 2 {"version":"1.1","math":"\phi_e=(\phi_P-\phi_E)/2"}

Answer

None of those

Answer

ϕ e = ( ϕ P + ϕ W ) / 2 {"version":"1.1","math":"\phi_e=(\phi_P+\phi_W)/2"}

Answer

ϕ e = ( ϕ P + ϕ e ) / 2 {"version":"1.1","math":"\phi_e=(\phi_P+\phi_e)/2"}

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