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If f,g, and h are differentiable funct...

If `f,g,` and `h` are differentiable functions of `x` and `(delta)`=`|[f,g,h], [(xf)',(xg)',(xh)'],[(x^2f)' ',(x^2g)' ',(x^2h)' ']|`
prove that `delta^(prime)`=`|[f,g,h],[f',g', h],[ (x^3f' ')',(x^3g' ')',(x^3h ' ')']|`

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