`y = sqrt((x-1)/(x^4 + 1))` Use logarithmic differentiation to find the derivative of the function.

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Given: `y=sqrt((x-1)/(x^4+1))`

Take the logarithm of both sides of the equation. Then rewrite the equation using the Laws of Logarithms.

`lny=lnsqrt((x-1)/(x^4+1))`

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