Let `f,g, h` be differentiable functions of x. if `Delta = |(f,g,h),((xf)',(xg)',(xh)'),((x^(2) f)'

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Let `f,g, h` be differentiable functions of x. if `Delta = |(f,g,h),((xf)',(xg)',(xh)'),((x^(2) f)'',(x^(2)g)'',(x^(2) h)'')|and, Delta' = |(f,g,h),(f',g',h'),((x^(n)f'')',(x^(n) g'')',(x^(n) h'')')|`, then n =
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