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Given the function 
f(x)=(x)/(5-4x^(4)), find 
f^(')(x) in simplified form.
Answer: 
f^(')(x)=

Given the function f(x)=x54x4 f(x)=\frac{x}{5-4 x^{4}} , find f(x) f^{\prime}(x) in simplified form.\newlineAnswer: f(x)= f^{\prime}(x)=

Full solution

Q. Given the function f(x)=x54x4 f(x)=\frac{x}{5-4 x^{4}} , find f(x) f^{\prime}(x) in simplified form.\newlineAnswer: f(x)= f^{\prime}(x)=
  1. Identify u(x)u(x) and v(x)v(x): We need to find the derivative of the function f(x)=x54x4f(x) = \frac{x}{5 - 4x^4}. This is a quotient, so we will use the quotient rule for differentiation, which states that if we have a function g(x)=u(x)v(x)g(x) = \frac{u(x)}{v(x)}, then g(x)=u(x)v(x)u(x)v(x)(v(x))2g'(x) = \frac{u'(x)v(x) - u(x)v'(x)}{(v(x))^2}.
  2. Compute derivatives u(x)u'(x) and v(x)v'(x): First, identify u(x)u(x) and v(x)v(x). Here, u(x)=xu(x) = x and v(x)=54x4v(x) = 5 - 4x^4. Then compute the derivatives u(x)u'(x) and v(x)v'(x). The derivative of u(x)u(x) with respect to xx is v(x)v'(x)00. The derivative of v(x)v(x) with respect to xx is v(x)v'(x)33.
  3. Apply quotient rule: Now apply the quotient rule. f(x)=u(x)v(x)u(x)v(x)(v(x))2=(1(54x4)x(16x3))(54x4)2f'(x) = \frac{u'(x)v(x) - u(x)v'(x)}{(v(x))^2} = \frac{(1 \cdot (5 - 4x^4) - x \cdot (-16x^3))}{(5 - 4x^4)^2}.
  4. Simplify numerator: Simplify the numerator of the derivative. f(x)=54x4+16x4(54x4)2=5+12x4(54x4)2f'(x) = \frac{5 - 4x^4 + 16x^4}{(5 - 4x^4)^2} = \frac{5 + 12x^4}{(5 - 4x^4)^2}.
  5. Final derivative: The derivative f(x)f'(x) is now in simplified form. f(x)=5+12x4(54x4)2f'(x) = \frac{5 + 12x^4}{(5 - 4x^4)^2}.

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