Page 253 - The Effect of Hydrogen and Hydrides - ebook first test

2
2
= ∫ [ ( ) + ∇ + (∇ ) + ⋯ ]
2

1

2
∇
1

2
∫ ( ∇ ) = − ∫ ( )(∇ ) + ∫ ( ∇ ∙ )
2
⁄
1
1
1

∇ ∙ = 0
2
( ∇ )
1
⁄
( ⁄ )(∇ ) 2 = − + 2
1
1


( ) , < 0 ( ) , = 0
2
⁄
2
2
⁄
2
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