Find the derivative of the function \( F(x)=\left(\frac{5 x-3}{4-7 x}\right)^{6} \)
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Bonus Knowledge
To find the derivative of the function \( F(x)=\left(\frac{5 x-3}{4-7 x}\right)^{6} \), we will use the chain rule and the quotient rule. Firstly, let \( u = \frac{5x - 3}{4 - 7x} \). Then, we can rewrite \( F(x) = u^6 \). Now apply the chain rule: \[ F'(x) = 6u^5 \cdot u' \] Next, we need to find \( u' \) using the quotient rule: \[ u' = \frac{(5)(4 - 7x) - (5x - 3)(-7)}{(4 - 7x)^2} \] Calculating the numerator: \[ u' = \frac{20 - 35x + 35x - 21}{(4 - 7x)^2} = \frac{20 - 21}{(4 - 7x)^2} = \frac{-1}{(4 - 7x)^2} \] Now, substitute \( u \) and \( u' \) back into the derivative of \( F \): \[ F'(x) = 6\left(\frac{5x - 3}{4 - 7x}\right)^5 \cdot \left(\frac{-1}{(4 - 7x)^2}\right) \] We can simplify this to: \[ F'(x) = \frac{-6(5x - 3)^5}{(4 - 7x)^7} \] Thus, the derivative of the function \( F(x) \) is: \[ F'(x) = \frac{-6(5x - 3)^5}{(4 - 7x)^7} \]