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1. |
Which of these equations represent 1-D steady state diffusion? |
A. | div( grad )+S=0 |
B. | ( frac{d}{dx}( Gamma frac{d phi}{dx})+S=0 ) |
C. | ( frac{d phi}{dt}+ frac{d}{dx}( Gamma frac{d phi}{dx})+S=0 ) |
D. | ( frac{d phi}{dt}+div( Gamma grad phi)+S=0 ) |
Answer» C. ( frac{d phi}{dt}+ frac{d}{dx}( Gamma frac{d phi}{dx})+S=0 ) | |