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Find the derivative of the following function.

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

Find the derivative of the following function.\newliney=ln(2x3) y=\ln \left(-2 x^{3}\right) \newlineAnswer: y= y^{\prime}=

Full solution

Q. Find the derivative of the following function.\newliney=ln(2x3) y=\ln \left(-2 x^{3}\right) \newlineAnswer: y= y^{\prime}=
  1. Apply Chain Rule: First, we need to apply the chain rule to differentiate the function y=ln(2x3)y=\ln(-2x^{3}). The 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.
  2. Find Derivative of Inner Function: The outer function is the natural logarithm ln(u)\ln(u), and its derivative is 1u\frac{1}{u}. The inner function is 2x3-2x^3, and we will find its derivative next.
  3. Apply Chain Rule Again: The derivative of the inner function 2x3-2x^3 with respect to xx is found by using the power rule, which states that the derivative of xnx^n is nx(n1)n\cdot x^{(n-1)}. So the derivative of 2x3-2x^3 is 23x(31)=6x2-2\cdot 3\cdot x^{(3-1)} = -6x^2.
  4. Simplify Expression: Now we can apply the chain rule. The derivative of yy with respect to xx is the derivative of the outer function evaluated at the inner function times the derivative of the inner function. This gives us y=12x3×(6x2)y' = \frac{1}{-2x^3} \times (-6x^2).
  5. Cancel Common Terms: Simplify the expression by multiplying the two terms. This gives us y=6x22x3y' = \frac{-6x^2}{-2x^3}.
  6. Simplify Constant Terms: We can simplify the expression further by canceling out the common terms. The x2x^2 in the numerator and one of the xx's in the denominator cancel out, and the negatives cancel each other. This leaves us with y=62xy' = \frac{6}{2x}.
  7. Simplify Constant Terms: We can simplify the expression further by canceling out the common terms. The x2x^2 in the numerator and one of the xx's in the denominator cancel out, and the negatives cancel each other. This leaves us with y=62xy' = \frac{6}{2x}.Finally, we can simplify the constant terms. 66 divided by 22 is 33, so the final simplified derivative is y=3xy' = \frac{3}{x}.

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