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Find the derivative of the function 
f(x)=ln(x^(2)-3x+2).

Find the derivative of the function f(x)=ln(x23x+2)f(x)=\ln(x^{2}-3x+2).

Full solution

Q. Find the derivative of the function f(x)=ln(x23x+2)f(x)=\ln(x^{2}-3x+2).
  1. Identify Functions: To find the derivative of the function f(x)=ln(x23x+2)f(x) = \ln(x^2 - 3x + 2), we will use the chain rule. 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 Outer and Inner: First, let's identify the outer function and the inner function. The outer function is g(u)=ln(u)g(u) = \ln(u), and the inner function is u(x)=x23x+2u(x) = x^2 - 3x + 2.
  3. Derivative of Outer: The derivative of the outer function g(u)=ln(u)g(u) = \ln(u) with respect to uu is 1u\frac{1}{u}. We will apply this after we find the derivative of the inner function.
  4. Derivative of Inner: Now, let's find the derivative of the inner function u(x)=x23x+2u(x) = x^2 - 3x + 2. The derivative of x2x^2 is 2x2x, the derivative of 3x-3x is 3-3, and the derivative of a constant like 22 is 00.
  5. Combine Inner Derivative: Combining the derivatives of the terms in the inner function, we get u(x)=2x3u'(x) = 2x - 3.
  6. Apply Chain Rule: Now we can apply the chain rule. The derivative of the function f(x)f(x) with respect to xx is the derivative of the outer function evaluated at the inner function times the derivative of the inner function.\newlinef(x)=g(u(x))u(x)f'(x) = g'(u(x)) \cdot u'(x)
  7. Substitute Derivatives: Substituting the derivatives we found, we get:\newlinef(x)=1x23x+2(2x3)f'(x) = \frac{1}{x^2 - 3x + 2} \cdot (2x - 3)
  8. Simplify Expression: Simplifying the expression, we leave it as is because it is the simplest form for the derivative of the given function.\newlinef(x)=2x3x23x+2f'(x) = \frac{2x - 3}{x^2 - 3x + 2}

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