ecuació de estat: sólid ideal

a_{V}P+a_{P}V = kT

P = (1/a_{V})·( kT+(-1)·a_{P}V )

V = (1/a_{P})·( kT+(-1)·a_{V}P )

T = (1/k)·( a_{V}P+a_{P}V )

d_{V}[P] = (-1)·( a_{P}/a_{V} )

d_{P}[V] = (-1)·( a_{V}/a_{P} )

d_{T}[P] = ( k/a_{V} )

d_{T}[V] = ( k/a_{P} )

d_{V}[T] = ( a_{P}/k )

d_{P}[T] = ( a_{V}/k )