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Find the derivative of the following function.

y=ln(-7x^(3)-6x^(2))
Answer: 
y^(')=

Find the derivative of the following function.\newliney=ln(7x36x2) y=\ln \left(-7 x^{3}-6 x^{2}\right) \newlineAnswer: y= y^{\prime}=

Full solution

Q. Find the derivative of the following function.\newliney=ln(7x36x2) y=\ln \left(-7 x^{3}-6 x^{2}\right) \newlineAnswer: y= y^{\prime}=
  1. Identify function: Identify the function to differentiate.\newlineWe have y=ln(7x36x2)y = \ln(-7x^3 - 6x^2). We need to find the derivative of this function with respect to xx.
  2. Apply chain rule: Apply the chain rule for differentiation.\newlineThe chain rule states that the derivative of a composite function is the derivative of the outer function evaluated at the inner function times the derivative of the inner function. Here, the outer function is ln(u)\ln(u) and the inner function is u=7x36x2u = -7x^3 - 6x^2.
  3. Differentiate outer function: Differentiate the outer function with respect to the inner function.\newlineThe derivative of ln(u)\ln(u) with respect to uu is 1u\frac{1}{u}. So, the derivative of the outer function is 17x36x2\frac{1}{-7x^3 - 6x^2}.
  4. Differentiate inner function: Differentiate the inner function with respect to xx. The inner function is u=7x36x2u = -7x^3 - 6x^2. The derivative of 7x3-7x^3 with respect to xx is 21x2-21x^2, and the derivative of 6x2-6x^2 with respect to xx is 12x-12x. So, the derivative of the inner function is 21x212x-21x^2 - 12x.
  5. Apply chain rule: Apply the chain rule to find the derivative of the composite function. Using the chain rule, the derivative of yy with respect to xx is 1(7x36x2)\frac{1}{(-7x^3 - 6x^2)} * (21x212x)(-21x^2 - 12x).
  6. Simplify expression: Simplify the expression.\newlineWe multiply the two derivatives together to get the final derivative:\newliney=1(7x36x2)×(21x212x)=(21x212x)(7x36x2)y' = \frac{1}{(-7x^3 - 6x^2)} \times (-21x^2 - 12x) = \frac{(-21x^2 - 12x)}{(-7x^3 - 6x^2)}.

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