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Find the derivative of the following function.

y=ln(8x^(3))
Answer: 
y^(')=

Find the derivative of the following function.\newliney=ln(8x3) y=\ln \left(8 x^{3}\right) \newlineAnswer: y= y^{\prime}=

Full solution

Q. Find the derivative of the following function.\newliney=ln(8x3) y=\ln \left(8 x^{3}\right) \newlineAnswer: y= y^{\prime}=
  1. Identify Function: Identify the function to differentiate.\newlineWe have y=ln(8x3)y = \ln(8x^{3}). We need to find the derivative of yy with respect to xx, denoted as yy'.
  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=8x3u = 8x^{3}.
  3. Differentiate Outer Function: Differentiate the outer function. The derivative of ln(u)\ln(u) with respect to uu is 1u\frac{1}{u}. So, if y=ln(u)y = \ln(u), then y=1ududxy' = \frac{1}{u} \cdot \frac{du}{dx}.
  4. Differentiate Inner Function: Differentiate the inner function.\newlineThe inner function is u=8x3u = 8x^{3}. The derivative of 8x38x^{3} with respect to xx is 24x224x^{2}, since ddx[xn]=nx(n1)\frac{d}{dx}[x^{n}] = n\cdot x^{(n-1)} and here n=3n=3.
  5. Apply Chain Rule: Apply the derivatives from Steps 33 and 44 using the chain rule.\newlineWe have y=1ududxy' = \frac{1}{u} \cdot \frac{du}{dx}, where u=8x3u = 8x^{3} and dudx=24x2\frac{du}{dx} = 24x^{2}. Therefore, y=18x324x2y' = \frac{1}{8x^{3}} \cdot 24x^{2}.
  6. Simplify Expression: Simplify the expression for yy'.y=18x3×24x2y' = \frac{1}{8x^{3}} \times 24x^{2} simplifies to y=24x28x3y' = \frac{24x^{2}}{8x^{3}}. We can cancel out x2x^{2} from the numerator and denominator and simplify the constants.
  7. Final Simplification: Final simplification.\newlineAfter canceling x2x^{2} and simplifying the constants, we get y=248xy' = \frac{24}{8x}. The constant 248\frac{24}{8} simplifies to 33, so y=3xy' = \frac{3}{x}.

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