Consider a medium in which the finite difference formulation of a general interior node is...

Consider a medium in which the finite difference formulation of a general interior node is given in its simplest form as

(a) Is heat transfer in this medium steady or transient

(b) Is heat transfer one-, two-, or three-dimensional?

(c) Is there heat generation in the medium?

(d) Is the nodal spacing constant or variable?

(e) Is the thermal conductivity of the medium constant or variable?