The Wheeler-DeWitt equation for the induced gravity theory is constructed in
the minisuperspace approximation, and then solved using the WKB method under
three types of boundary condition proposed respectively by Hartle & Hawking
(``no boundary''), Linde and Vilenkin (``tunneling from nothing''). It is found
that no matter how the gravitational and cosmological ``constants'' vary in the
classical models, they will acquire constant values when the universe comes
from quantum creation, and that, in particular, the resulting tunneling wave
function under the Linde or Vilenkin boundary condition reaches its maximum
value if the cosmological constant vanishes.Comment: 10 pages, no figure, LaTex fil
