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By a change of variable x(u,v)=uv,y(u,v)=v/u in double integral, the integrand f(x,y) changes to f(uv,v/u)ϕ(u,v). Then, ϕ(u,v) is |
Answer» By a change of variable x(u,v)=uv,y(u,v)=v/u in double integral, the integrand f(x,y) changes to f(uv,v/u)ϕ(u,v). Then, ϕ(u,v) is |
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