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df-d-sinh-df-d-sin-df-d-0-f-




Question Number 2355 by 123456 last updated on 17/Nov/15
(df/dζ)sinh ζ+(df/dθ)sin θ+(df/dρ)ρ=0  f(ρ,ζ,θ)=??
dfdζsinhζ+dfdθsinθ+dfdρρ=0f(ρ,ζ,θ)=??

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