Energy eigenvalues for anharmonic and double-well oscillators with even power polynomial potential

Energies for different states of anharmonic and double-well oscillators described by V(x) = Σj = 1s(a2j/2j)x2j have been determined using the renormalized hypervirial-Padé scheme. A comparison of the results with available exact values shows that the method is quite successful for anharmonic oscillators but fails in the case of double-well oscillators. Also included is the discussion of the dependence of the energy on various parameters.