How does Fermi velocity compare between two metals with different energy bands?

Josh1079
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Homework Statement


The energy band for two different metals can be expressed as E=Ak2 and E=Bk2, respectively. Suppose A>B, and the Fermi energy is equal for these two metal. Calculate and compare the Fermi velocity for both metals.

Homework Equations

The Attempt at a Solution


I'm very confused since I can't really see how the band energies and fermi energy are related.

Thanks!
 
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You only need the equation that combines the Fermi energy and velocity...
 

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