where e6da6c268a9789e4eb4e64b8" title="Click to view the MathML source">Δpz:=div(|∇z|p−2∇z), e5a4a8f8f619e47d760eb" title="Click to view the MathML source">1<p<n, λ is a positive parameter, 8ed7b76aad25e0a2c735f8841b469a4" title="Click to view the MathML source">r0>0 and 9d56a30bcd8320f8" title="Click to view the MathML source">ΩE:={x∈Rn | |x|>r0}. Here the weight function bfa1b2c54103e" title="Click to view the MathML source">K∈C1[r0,∞) satisfies 8e741ece054603ce048d523b" title="Click to view the MathML source">K(r)>0 for r≥r0, limr→∞K(r)=0, and the reaction term f∈C[0,∞)∩C1(0,∞) is strictly increasing and satisfies e6a3f3497ab947229" title="Click to view the MathML source">f(0)<0 (semipositone), 8bdbc77500934873d946bd58fe18">, lims→∞f(s)=∞, bfc3f672426254e7940ee95f6cd2"> and 8bc7ad01fc07568a7"> is nonincreasing on bf" title="Click to view the MathML source">[a,∞) for some bf366bb1c45589078abf9ed957f85e9b" title="Click to view the MathML source">a>0 and q∈(0,p−1). For a class of such steady state equations it turns out that every nonnegative radial solution is strictly positive in the exterior of a ball, and exists for λ≫1. We establish the uniqueness of this positive radial solution for λ≫1.